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+@import '~bootstrap/scss/functions';
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+@import '~bootstrap/scss/variables';
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+@import '~bootstrap/scss/mixins';
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+//
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+//
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+// Apply partially
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+// https://github.com/twbs/bootstrap/blob/v4.4.1/scss/_reboot.scss
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+//
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+//
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+
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+// stylelint-disable at-rule-no-vendor-prefix, declaration-no-important, selector-no-qualifying-type, property-no-vendor-prefix
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+
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+// Reboot
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+//
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+// Normalization of HTML elements, manually forked from Normalize.css to remove
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+// styles targeting irrelevant browsers while applying new styles.
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+//
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+// Normalize is licensed MIT. https://github.com/necolas/normalize.css
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+
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+// Document
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+//
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+// 1. Change from `box-sizing: content-box` so that `width` is not affected by `padding` or `border`.
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+// 2. Change the default font family in all browsers.
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+// 3. Correct the line height in all browsers.
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+// 4. Prevent adjustments of font size after orientation changes in IE on Windows Phone and in iOS.
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+// 5. Change the default tap highlight to be completely transparent in iOS.
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+
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+// *,
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+// *::before,
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+// *::after {
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+// box-sizing: border-box; // 1
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+// }
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+
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+// html {
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+// font-family: sans-serif; // 2
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+// line-height: 1.15; // 3
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+// -webkit-text-size-adjust: 100%; // 4
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+// -webkit-tap-highlight-color: rgba($black, 0); // 5
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+// }
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+
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+// Shim for "new" HTML5 structural elements to display correctly (IE10, older browsers)
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+// TODO: remove in v5
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+// stylelint-disable-next-line selector-list-comma-newline-after
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+// article, aside, figcaption, figure, footer, header, hgroup, main, nav, section {
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+// display: block;
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+// }
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+
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+// Body
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+//
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+// 1. Remove the margin in all browsers.
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+// 2. As a best practice, apply a default `background-color`.
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+// 3. Set an explicit initial text-align value so that we can later use
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+// the `inherit` value on things like `<th>` elements.
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+
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+body {
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+ // margin: 0; // 1
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+ // font-family: $font-family-base;
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+ // @include font-size($font-size-base);
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+ // font-weight: $font-weight-base;
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+ // line-height: $line-height-base;
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+ color: $body-color;
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+ // text-align: left; // 3
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+ background-color: $body-bg; // 2
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+}
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+
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+// Future-proof rule: in browsers that support :focus-visible, suppress the focus outline
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+// on elements that programmatically receive focus but wouldn't normally show a visible
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+// focus outline. In general, this would mean that the outline is only applied if the
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+// interaction that led to the element receiving programmatic focus was a keyboard interaction,
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+// or the browser has somehow determined that the user is primarily a keyboard user and/or
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+// wants focus outlines to always be presented.
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+//
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+// See https://developer.mozilla.org/en-US/docs/Web/CSS/:focus-visible
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+// and https://developer.paciellogroup.com/blog/2018/03/focus-visible-and-backwards-compatibility/
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+// [tabindex="-1"]:focus:not(:focus-visible) {
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+// outline: 0 !important;
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+// }
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+
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+// Content grouping
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+//
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+// 1. Add the correct box sizing in Firefox.
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+// 2. Show the overflow in Edge and IE.
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+
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+// hr {
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+// box-sizing: content-box; // 1
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+// height: 0; // 1
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+// overflow: visible; // 2
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+// }
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+
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+//
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+// Typography
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+//
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+
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+// Remove top margins from headings
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+//
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+// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
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+// margin for easier control within type scales as it avoids margin collapsing.
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+// stylelint-disable-next-line selector-list-comma-newline-after
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+// h1, h2, h3, h4, h5, h6 {
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+// margin-top: 0;
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+// margin-bottom: $headings-margin-bottom;
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+// }
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+
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+// Reset margins on paragraphs
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+//
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+// Similarly, the top margin on `<p>`s get reset. However, we also reset the
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+// bottom margin to use `rem` units instead of `em`.
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+// p {
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+// margin-top: 0;
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+// margin-bottom: $paragraph-margin-bottom;
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+// }
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+
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+// Abbreviations
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+//
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+// 1. Duplicate behavior to the data-* attribute for our tooltip plugin
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+// 2. Add the correct text decoration in Chrome, Edge, IE, Opera, and Safari.
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+// 3. Add explicit cursor to indicate changed behavior.
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+// 4. Remove the bottom border in Firefox 39-.
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+// 5. Prevent the text-decoration to be skipped.
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+
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+// abbr[title],
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+// abbr[data-original-title] { // 1
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+// text-decoration: underline; // 2
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+// text-decoration: underline dotted; // 2
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+// cursor: help; // 3
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+// border-bottom: 0; // 4
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+// text-decoration-skip-ink: none; // 5
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+// }
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+
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+// address {
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+// margin-bottom: 1rem;
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+// font-style: normal;
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+// line-height: inherit;
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+// }
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+
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+// ol,
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+// ul,
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+// dl {
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+// margin-top: 0;
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+// margin-bottom: 1rem;
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+// }
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+
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+// ol ol,
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+// ul ul,
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+// ol ul,
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+// ul ol {
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+// margin-bottom: 0;
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+// }
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+
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+// dt {
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+// font-weight: $dt-font-weight;
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+// }
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+
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+// dd {
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+// margin-bottom: .5rem;
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+// margin-left: 0; // Undo browser default
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+// }
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+
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+// blockquote {
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+// margin: 0 0 1rem;
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+// }
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+
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+// b,
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+// strong {
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+// font-weight: $font-weight-bolder; // Add the correct font weight in Chrome, Edge, and Safari
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+// }
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+
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+// small {
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+// @include font-size(80%); // Add the correct font size in all browsers
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+// }
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+
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+//
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+// Prevent `sub` and `sup` elements from affecting the line height in
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+// all browsers.
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+//
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+
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+// sub,
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+// sup {
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+// position: relative;
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+// @include font-size(75%);
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+// line-height: 0;
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+// vertical-align: baseline;
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+// }
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+
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+// sub { bottom: -.25em; }
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+// sup { top: -.5em; }
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+
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+//
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+// Links
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+//
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+
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+a {
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+ color: $link-color;
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+ // text-decoration: $link-decoration;
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+ background-color: transparent; // Remove the gray background on active links in IE 10.
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+
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+ @include hover() {
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+ color: $link-hover-color;
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+ // text-decoration: $link-hover-decoration;
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+ }
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+}
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+
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+// And undo these styles for placeholder links/named anchors (without href).
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+// It would be more straightforward to just use a[href] in previous block, but that
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+// causes specificity issues in many other styles that are too complex to fix.
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+// See https://github.com/twbs/bootstrap/issues/19402
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+
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+a:not([href]) {
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+ color: inherit;
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+ // text-decoration: none;
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+
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+ @include hover() {
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+ color: inherit;
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+ // text-decoration: none;
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+ }
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+}
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+
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+//
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+// Code
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+//
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+
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+// pre,
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+// code,
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+// kbd,
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+// samp {
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+// font-family: $font-family-monospace;
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+// @include font-size(1em); // Correct the odd `em` font sizing in all browsers.
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+// }
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+
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+// pre {
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+// // Remove browser default top margin
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+// margin-top: 0;
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+// // Reset browser default of `1em` to use `rem`s
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+// margin-bottom: 1rem;
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+// // Don't allow content to break outside
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+// overflow: auto;
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+// }
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+
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+//
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+// Figures
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+//
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+
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+// figure {
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+// // Apply a consistent margin strategy (matches our type styles).
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+// margin: 0 0 1rem;
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+// }
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+
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+//
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+// Images and content
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+//
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+
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+// img {
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+// vertical-align: middle;
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+// border-style: none; // Remove the border on images inside links in IE 10-.
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+// }
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+
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+// svg {
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+// // Workaround for the SVG overflow bug in IE10/11 is still required.
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+// // See https://github.com/twbs/bootstrap/issues/26878
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+// overflow: hidden;
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+// vertical-align: middle;
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+// }
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+
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+//
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+// Tables
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+//
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+
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+// table {
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+// border-collapse: collapse; // Prevent double borders
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+// }
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+
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+// caption {
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+// padding-top: $table-cell-padding;
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+// padding-bottom: $table-cell-padding;
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+// color: $table-caption-color;
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+// text-align: left;
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+// caption-side: bottom;
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+// }
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+
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+// th {
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+// // Matches default `<td>` alignment by inheriting from the `<body>`, or the
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+// // closest parent with a set `text-align`.
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+// text-align: inherit;
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+// }
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+
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+//
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+// Forms
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+//
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+
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+// label {
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+// // Allow labels to use `margin` for spacing.
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+// display: inline-block;
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+// margin-bottom: $label-margin-bottom;
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+// }
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+
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+// Remove the default `border-radius` that macOS Chrome adds.
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+//
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+// Details at https://github.com/twbs/bootstrap/issues/24093
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+// button {
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+// // stylelint-disable-next-line property-blacklist
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+// border-radius: 0;
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+// }
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+
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+// Work around a Firefox/IE bug where the transparent `button` background
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+// results in a loss of the default `button` focus styles.
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+//
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+// Credit: https://github.com/suitcss/base/
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+// button:focus {
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+// outline: 1px dotted;
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+// outline: 5px auto -webkit-focus-ring-color;
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+// }
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+
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+// input,
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+// button,
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+// select,
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+// optgroup,
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+// textarea {
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+// margin: 0; // Remove the margin in Firefox and Safari
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+// font-family: inherit;
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+// @include font-size(inherit);
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+// line-height: inherit;
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+// }
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+
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+// button,
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+// input {
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+// overflow: visible; // Show the overflow in Edge
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+// }
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+
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+// button,
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+// select {
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+// text-transform: none; // Remove the inheritance of text transform in Firefox
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+// }
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+
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+// Remove the inheritance of word-wrap in Safari.
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+//
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+// Details at https://github.com/twbs/bootstrap/issues/24990
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+// select {
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+// word-wrap: normal;
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+// }
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+
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+// 1. Prevent a WebKit bug where (2) destroys native `audio` and `video`
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+// controls in Android 4.
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+// 2. Correct the inability to style clickable types in iOS and Safari.
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+// button,
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+// [type="button"], // 1
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+// [type="reset"],
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+// [type="submit"] {
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+// -webkit-appearance: button; // 2
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+// }
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+
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+// Opinionated: add "hand" cursor to non-disabled button elements.
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+// @if $enable-pointer-cursor-for-buttons {
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+// button,
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+// [type="button"],
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+// [type="reset"],
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+// [type="submit"] {
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+// &:not(:disabled) {
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+// cursor: pointer;
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+// }
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+// }
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+// }
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+
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+// Remove inner border and padding from Firefox, but don't restore the outline like Normalize.
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+// button::-moz-focus-inner,
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+// [type="button"]::-moz-focus-inner,
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+// [type="reset"]::-moz-focus-inner,
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+// [type="submit"]::-moz-focus-inner {
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+// padding: 0;
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+// border-style: none;
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+// }
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+
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+// input[type="radio"],
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+// input[type="checkbox"] {
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+// box-sizing: border-box; // 1. Add the correct box sizing in IE 10-
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+// padding: 0; // 2. Remove the padding in IE 10-
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+// }
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+
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+// input[type="date"],
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+// input[type="time"],
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+// input[type="datetime-local"],
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+// input[type="month"] {
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+// // Remove the default appearance of temporal inputs to avoid a Mobile Safari
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+// // bug where setting a custom line-height prevents text from being vertically
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+// // centered within the input.
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+// // See https://bugs.webkit.org/show_bug.cgi?id=139848
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+// // and https://github.com/twbs/bootstrap/issues/11266
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+// -webkit-appearance: listbox;
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+// }
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+
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+// textarea {
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+// overflow: auto; // Remove the default vertical scrollbar in IE.
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+// // Textareas should really only resize vertically so they don't break their (horizontal) containers.
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+// resize: vertical;
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+// }
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+
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+// fieldset {
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+// // Browsers set a default `min-width: min-content;` on fieldsets,
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+// // unlike e.g. `<div>`s, which have `min-width: 0;` by default.
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+// // So we reset that to ensure fieldsets behave more like a standard block element.
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+// // See https://github.com/twbs/bootstrap/issues/12359
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+// // and https://html.spec.whatwg.org/multipage/#the-fieldset-and-legend-elements
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+// min-width: 0;
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+// // Reset the default outline behavior of fieldsets so they don't affect page layout.
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+// padding: 0;
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+// margin: 0;
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+// border: 0;
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+// }
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+
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+// 1. Correct the text wrapping in Edge and IE.
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+// 2. Correct the color inheritance from `fieldset` elements in IE.
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+// legend {
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+// display: block;
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+// width: 100%;
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+// max-width: 100%; // 1
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+// padding: 0;
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+// margin-bottom: .5rem;
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+// @include font-size(1.5rem);
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+// line-height: inherit;
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+// color: inherit; // 2
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+// white-space: normal; // 1
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+// }
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+
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+// progress {
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+// vertical-align: baseline; // Add the correct vertical alignment in Chrome, Firefox, and Opera.
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+// }
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+
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+// Correct the cursor style of increment and decrement buttons in Chrome.
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+// [type="number"]::-webkit-inner-spin-button,
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+// [type="number"]::-webkit-outer-spin-button {
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+// height: auto;
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+// }
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+
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+// [type="search"] {
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+// // This overrides the extra rounded corners on search inputs in iOS so that our
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+// // `.form-control` class can properly style them. Note that this cannot simply
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+// // be added to `.form-control` as it's not specific enough. For details, see
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+// // https://github.com/twbs/bootstrap/issues/11586.
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+// outline-offset: -2px; // 2. Correct the outline style in Safari.
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+// -webkit-appearance: none;
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+// }
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+
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+//
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+// Remove the inner padding in Chrome and Safari on macOS.
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+//
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+
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+// [type="search"]::-webkit-search-decoration {
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+// -webkit-appearance: none;
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+// }
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+
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+//
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+// 1. Correct the inability to style clickable types in iOS and Safari.
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+// 2. Change font properties to `inherit` in Safari.
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+//
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+
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+// ::-webkit-file-upload-button {
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+// font: inherit; // 2
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+// -webkit-appearance: button; // 1
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+// }
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+
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+//
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+// Correct element displays
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+//
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+
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+// output {
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+// display: inline-block;
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+// }
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+
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+// summary {
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+// display: list-item; // Add the correct display in all browsers
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+// cursor: pointer;
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+// }
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+
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+// template {
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+// display: none; // Add the correct display in IE
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+// }
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+
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+// Always hide an element with the `hidden` HTML attribute (from PureCSS).
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+// Needed for proper display in IE 10-.
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+// [hidden] {
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+// display: none !important;
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+// }
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Yuki Takei