weseek__growi/src/client/styles/scss/_search.scss

// import react-bootstrap-typeahead
@import "~react-bootstrap-typeahead/css/Typeahead";
.search-listpage-icon {
  font-size: 16px;
  color: #999;
}

.search-listpage-clear {
  display: none;
  position: absolute;
  right: 8px;
  font-size: 0.6em;
  width: 22px;
  height: 22px;
  color: #ccc;
  padding: 8px;
}

.search-typeahead {
  position: relative;
  .search-clear {
    position: absolute;
    z-index: 3;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    color: #999;
    padding: 0;
  }
  .rbt-menu {
    margin-top: 3px;
    li a span {
      .page-path {
        display: inline;
        padding: 0 4px;
        color: inherit;
      }
      .page-list-meta {
        font-size: .9em;
        color: #999;
        >span {
          margin-right: .3rem;
        }
      }
    }
  }
}


// top and sidebar input styles
.search-top, .search-sidebar {
  .search-clear {
    top: 3px;
    right: 26px;
  }

  .btn-group-dropdown-scope .dropdown-toggle {
    min-width: 95px;
    height: 30px;
    border-top-left-radius: 40px;
    border-bottom-left-radius: 40px;
    padding-top: 4px;
    padding-bottom: 4px;
    padding-right: 4px;
  }
  // using react-bootstrap-typeahead
  // see: https://github.com/ericgio/react-bootstrap-typeahead
  .rbt-input.form-control {
    border: none;
    border-top-right-radius: 40px;
    border-bottom-right-radius: 40px;
    height: 30px;

    .rbt-input-wrapper {
      margin-left: 8px;
    }
  }
  .btn-group-submit-search {
    position: absolute;
    top: 0;
    right: 0;
    .btn {
      padding: 4px 10px;
    }
    z-index: 3;
  }
}

// layout
.search-top {
  margin-top: 10px;
  margin-bottom: 10px;

  .rbt-input.form-control {
    width: 200px;
    transition: 0.3s ease-out;
    // focus
    &.focus {
      width: 300px;
    }
  }
  .rbt-menu {
    margin-top: 33px;   // DIRTY HACK
                        //   note: 'transform: translate3d(0px, XXpx, 0px)' calculation has failed on .search-top
                        //         since upgrade react-bootstrap-typeahead to v3.3.2 -- 2019.02.05 Yuki Takei
  }
}
.search-sidebar {
  .search-form, .form-group, .rbt-input.form-control, .input-group {
    width: 100%;
  }
  .btn-group-submit-search {
    right: 30px;
  }
}

.search-result {

  .search-result-list {
    nav {
      padding-right: 0;
      &.affix {
        top: 58px;
        width: 33%;
        padding-right: 5px;
        padding-bottom: 50px;
        height: 100%;
        overflow-y: scroll;
      }
      .nav {
        > li {
          padding: 2px 8px;
          &.active {
            padding-right: 5px;
            border-right: solid 3px transparent;
          }
        }
      }
    }

    .search-result-meta {
      margin-bottom: 10px;
      font-weight: bold;
    }

    .search-result-list-delete-checkbox {
      margin: 0 10px 0 0;
      vertical-align: middle;
    }
  }

  .search-result-content {
    padding-bottom: 32px;

    .search-result-page {
      // adjust for anchor links by the height of fixed .search-page-input
      margin-top: -48px;
      padding-top: 48px;

      > h2 {
        font-size: 20px;
        line-height: 1em;
      }
      &:first-child > h2 {
        margin-top: 0;
      }

      .wiki {
        border: solid 1px #ccc;
        padding: 16px;
        border-radius: 3px;
        font-size: 13px;
      }
    }
  }
}

.search-page-input {
  padding: 10px 0;
  position: sticky;
  top: 0;
  z-index: 99;
  .input-group-btn .btn{
    padding: 0px 10px;
    height: 34px;
  }
}