Merge pull request #1993 from weseek/support/adjust-hack-md-width

Support/adjust hack md width

src/client/styles/scss/_mixins.scss

@@ -72,7 +72,7 @@
         .hackmd-preinit,
         .hackmd-error,
         #iframe-hackmd-container > iframe {
-          width: 100vw;
+          width: 100%;
           height: calc(100vh - #{$header-plus-footer});
           min-height: calc(100vh - #{$header-plus-footer}); // for IE11
         }