discourse/app/assets/stylesheets/desktop/topic-list.scss

// --------------------------------------------------
// Topic lists
// --------------------------------------------------

// List controls
// --------------------------------------------------

.list-controls {
  .nav {
    float: left;
    margin-bottom: 18px;
  }

  .btn {
    float: right;
    margin-left: 8px;
    margin-bottom: 10px;
    font-size: 16px;
    font-weight: normal;
  }

  a.badge-category {
    padding: 3px 12px;
    font-size: 16px;

    &.category-dropdown-button {
      height: 24px;
      padding: 3px 9px;
      i { height: 20px; }
    }

  }

  .badge-category {
    font-weight: normal;
  }

}

// Base list
// --------------------------------------------------

.topic-list {
  margin: 0 0 10px;
  .fa-thumb-tack {color: $primary;}
  .fa-thumb-tack.unpinned {color: $primary;}
  a.title {color: $primary;}
  a.title:visited:not(.badge-notification) {color: scale-color($primary, $lightness: 35%);}
  th,
  td {
    padding: 12px 5px;
    &:first-of-type {
      padding-left: 10px;
    }
    &:last-of-type {
      padding-right: 10px;
    }
  }
  th {
    button i.fa {color: scale-color($primary, $lightness: 50%);}
  }

  > tbody > tr {
    &:nth-child(even) {
        background-color: darken($secondary, 3%);
    }
    &:nth-child(odd) {
        background-color: $secondary;
    }
    &.highlighted {
        background-color: dark-light-diff($tertiary, $secondary, 90%, -41%);
    }
  }
  button.bulk-select {
    padding: 0;
    background: transparent;
    &:hover {
      color: scale-color-diff();
    }
  }

  .star {
    width: 20px;
    padding-right: 0;
    .fa-star {
      position: relative;
    }
    + .main-link {
      padding-left: 5px;
    }
  }
  .main-link {
    width: 495px;
  }

  .badge-notification {
    position: relative;
    top: -2px;
    &.new-topic {
      top: 0px;
      padding-left: 5px;
    }
  }

  .category {
    padding: 0 20px 0 20px;
    min-width: 80px;
  }
  .posters {
    // we know there are up to 5 avatars of fixed size
    // will be overridden by media width queries on narrow displays to 1 avatar's width
    width: 145px;
    min-width: 145px;
  }
  .posters {
    > a {
      float: left;
      margin-right: 4px;
      &:last-of-type {
        margin-right: 0;
      }
    }
  }
  .avatar {
    &.latest:not(.single) {
      box-shadow: 0 0 6px 1px desaturate(scale-color($tertiary, $lightness: 30%), 35%);
    }
  }

  .sortable {
    cursor: pointer;
    &:hover {
      background-color: dark-light-diff($primary, $secondary, 90%, -75%);
    }
    @include unselectable;
  }
  .likes {
    width: 65px;
  }
  .views {
    width: 65px;
  }
  .posts {
    width: 65px;
  }
  .activity {
    width: 60px;
    &:lang(zh_CN) {
      width: 70px;
    }
    span {
      cursor: pointer;
    }
  }
  .age {
    width: 60px;
  }
  .with-year {
    white-space: nowrap;
  }
}

#list-area .top-lists h2 { margin: 5px 0 10px; }

.topic-list tbody tr.has-excerpt .star {
  vertical-align: top;
  margin-top: 3px;
}

.topic-list.categories {
  a.title {
    color: $tertiary;
    font-size: 13px;
  }
  a.title:visited:not(.badge-notification) {color: scale-color($tertiary, $lightness: 35%);}

  th.posts {
    position: relative;
  }
  > tbody > tr {
    &:nth-child(odd) {
        background-color: darken($secondary, 3%);
      }
    &:nth-child(even) {
      background-color: $secondary;
      }
  }
  th .toggle-admin {
    position: absolute;
    padding: 3px 8px;
    font-size: 12px;
    right: -35px;
    top: 4px;
  }
  th.latest, td.latest {
    padding-left: 12px;
  }
  th.num {
    width: 45px;
  }
  th.stats {
    width: 90px;
  }
  td.latest {
    vertical-align: top;
    padding: 8px;
  }
  .last-user-info {
    font-size: 12px;
  }
  .has-description {
    td.category {
      padding-top: 15px;
    }
  }
  .category{
    position: relative;
    width: 45%;

    h3 {
      display: inline-block;
      font-size: 18px;
      a[href] {
        color: $primary;
      }
    }
    .subcategories {
      margin-top: 10px;
    }
    .featured-users {
      float: right;
      margin-right: 13px;
    }
    .category-description {
      margin-top: 10px;
    }
    .clear-badge {
      color: $primary;
    }
    .badge-category.bigger {
      padding: 6px 10px;
      font-size: 14px;
    }
  }

  .featured-topic {
    margin: 10px 0 0;
    font-size: 13px;
    /* topic status glyphs */
    i {
      color: scale-color($primary, $lightness: 50%) !important;
      font-size: 13px;
    }
    a.last-posted-at, a.last-posted-at:visited {
      color: scale-color($primary, $lightness: 50%);
    }
    .badge {
      font-size: 10px;
      top: -1px;
    }
  }

  .category .badge-category {
    display: inline-block;
    margin-top: 1px;
  }
}

.topic-list-bottom {
  margin: 20px 0;
}

// Misc. stuff
// --------------------------------------------------

#list-area {
  h2 {
    margin: 20px 0 10px;
  }
}

.category-dropdown-menu {
  max-height: 350px;
  margin-top: 30px;
  min-width: 152px;
}

#bulk-select {
  position: fixed;
  right: 20px;
  padding: 5px;
  background-color: $secondary;
}

button.dismiss-read {
  float: right;
  margin-bottom: 5px;
  margin-left: 10px;
}

.category-notification-menu .dropdown-menu {
  right: 0;
  top: 30px;
  bottom: auto;
  left: auto;
}

.category-heading {
  clear: both;
  p {
    line-height: 1.5em;
    font-size: 1.5em;
  }
}
.category-logo {
  max-height: 150px;
  float: left;
  margin-bottom: 15px;
  margin-right: 15px;
}

/* Tablet (portrait) ----------- */

@media all
and (max-width : 850px) {

  .nav-pills {
    > li > a {
      font-size: 14px;
      padding: 5px 10px ;
      }
  }

  .list-controls {
    padding: 0 5px;

    .btn {
        font-size: 14px
      }

    .category-dropdown-menu {
        min-width: 139px;
      }

    a.badge-category {
        font-size: 14px;
      }

  }

  .topic-list {
    .categories td.category {
      padding-left: 10px;
      }
   td:first-of-type {
     padding: 0;
     }
   th:first-of-type {
     padding: 12px 5px;
     }
   th {
     .btn .fa {
       margin-right: 2px;
       }
     }
   th, td {
      padding: 12px 2px;
      font-size: 13px;
     }
    .star {
      padding: 12px 5px;
      width: auto;
      }
    .main-link {
      font-size: 15px;
      padding: 12px 8px 12px 0px;
      }

    .likes {
      width: auto;
      }
    .category {
      min-width: 0;
      padding: 0;
      }
    .topic-excerpt {
      padding-right: 20px;
      }
    th.posters {
      text-align: center;
      }
    .posters {
       min-width: 0;
       width: 50px;
       a:not(.latest) {
         display: none;
         }
       a.latest {
         padding: 0 8px;
         }
       }
  }
}