edx-platform/cms/static/sass/views/_video-upload.scss

.view-video-uploads {

  .content-primary, .content-supplementary {
    @include box-sizing(border-box);
  }

  .content-primary {
    @extend .ui-col-wide;
  }

  .content-supplementary {
    @extend .ui-col-narrow;
  }

  .nav-actions {

    .fa-cloud-upload {
      @extend %t-copy;
      vertical-align: bottom;
      margin-right: ($baseline/5);
    }
  }

  .file-upload-form {
    @include clearfix();
    margin-bottom: ($baseline*1.5);
    width: 100%;

    .file-drop-area {
      border: 2px dashed $gray-l3;
      border-radius: ($baseline/5);
      padding: ($baseline*3);
      background: $white;
      text-align: center;

      &:hover,
      &.is-dragged {
        background: $blue-l5;
        border-style: solid;
        border-color: $blue-l4;
      }
    }
  }

  .active-video-upload-container {
    margin-bottom: ($baseline*2);

    .active-video-upload-list {
      @extend %cont-no-list;

      .active-video-upload {
        display: inline-block;
        min-height: ($baseline*4);
        width: (flex-grid(4) - 1.85);
        margin: (flex-gutter() - 1.85);
        border: 1px solid $gray-l3;
        border-radius: ($baseline/5);
        padding: ($baseline/2);
        vertical-align: top;

        .video-detail-name {
          @extend %cont-truncated;
          @extend %t-strong;
          margin-bottom: ($baseline/2);
          font-size: 90%;
        }

        .video-detail-status, .more-details-action {
          @include font-size(12);
          @include line-height(12);
        }

        .more-details-action, .upload-failure {
          display: none;
        }

        .video-detail-progress {
          -webkit-appearance: none;
          -moz-appearance: none;
          appearance: none;
          margin-bottom: ($baseline/2);
          border: none;
          width: 100%;
          height: ($baseline/4);
        }

        .video-detail-progress::-webkit-progress-bar {
          background-color: $white;
        }

        // Sadly, these rules must be separate or both Chrome and Firefox break
        .video-detail-progress::-webkit-progress-value {
          background-color: $color-ready;
        }

        .video-detail-progress::-moz-progress-bar {
          background-color: $color-ready;
        }

        &:hover {
          @include transition(all $tmg-f3);
          background: $white;
        }

        &.queued {
          .video-detail-progress {
            visibility: hidden;
          }
        }

        &.error {
          .video-upload-status {
            color: $color-error;
          }

          // Sadly, these rules must be separate or both Chrome and Firefox break
          .video-detail-progress::-webkit-progress-value {
            background-color: $color-error;
          }

          .video-detail-progress::-moz-progress-bar {
            background-color: $color-error;
          }

          .more-details-action, .upload-failure {
            display: inline-block;
            color: $color-error;
          }

          .more-details-action {
            margin-top: ($baseline/5);
            float: right;
          }
        }

        &.success {
          .video-upload-status {
            color: $color-ready;
          }
        }
      }
    }
  }

  .button {
    @extend %ui-btn-non;
  }

  .assets-library {

    .js-table-body .video-id-col {
      word-break: break-all;
    }

    .assets-title {
      display: inline-block;
      width: flex-grid(5, 9);
      @include margin-right(flex-gutter());
    }

    .wrapper-encodings-download {
      display: inline-block;
      width: flex-grid(4, 9);
      text-align: right;
    }

    .actions-list {
      @extend %actions-list;
    }
  }

  .video-table {
    .video-row {
      display: table;
      table-layout: fixed;
      width: 100%;

      .video-col {
        display: table-cell;
      }

      .name-col {
        width: 25%;
      }

      .thumbnail-col, .video-id-col {
        width: 15%;
      }

      .date-col, .status-col {
        width: 10%;
      }

      .actions-col {
        width: 5%;
      }

      .video-head-col.thumbnail-col {
          width: 17% !important;
      }
    }
  }

  .thumbnail-error-wrapper {
    display: table-row;
    white-space: nowrap;
    color: $red;
    .icon {
      margin: ($baseline*0.75) ($baseline/4) 0 ($baseline/2);
    }
  }

  $thumbnail-width: ($baseline*7.5);
  $thumbnail-height: ($baseline*5);

  .thumbnail-wrapper {
    position: relative;
    max-width: $thumbnail-width;
    max-height: $thumbnail-height;

    img {
      width: $thumbnail-width;
      height: $thumbnail-height;
    }

    * {
      cursor: pointer;
    }

    &.upload,
    &.requirements {
      border: 1px dashed $gray-l3;
    }

    &.requirements {
      .requirements-text {
        font-weight: 600;
      }
      .requirements-instructions {
        font-size: 15px;
        font-family: "Open Sans";
        text-align: left;
        color: $gray-d2;
        line-height: 1.5;
      }
      .video-duration {
        opacity: 0;
      }
    }

    &.edit {
      background: black;

      &:hover,
      &:focus,
      &.focused {
        img, .video-duration {
          @include transition(all 0.3s linear);
          opacity: 0.1;
        }
      }
    }

    &.progress {
      background: white;

      img {
        @include transition(all 0.5s linear);
        opacity: 0.15;
      }

      .action-icon {
        display: block;
      }
    }

    &.upload .thumbnail-action {
        color: $blue;
    }

    &.progress .thumbnail-action {
      .action-icon {
        @include font-size(20);
      }
    }

    &.edit {
      background-color: #4e4e4e;
    }

    &.edit .thumbnail-action .action-icon.edit {
      display: none;
    }

    &.edit .thumbnail-action .edit-container {
      background-color: $white;
      padding: ($baseline/4);
      border-radius: ($baseline/5);
      margin-top: ($baseline/2);
      display: none;
    }

    &.edit .action-text {
      color: $white;
    }

    .thumbnail-action {
      @include font-size(14);
    }

    .thumbnail-overlay > :not(.upload-image-input) {
      position: absolute;
      text-align: center;
      top: 50%;
      left: 5px;;
      right: 5px;
      @include transform(translateY(-50%));
      z-index: 1;
    }

    .upload-image-input {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      opacity: 0;
      z-index: 6;
      width: $thumbnail-width;
      height: $thumbnail-height;
    }

    .video-duration {
      position: absolute;
      text-align: center;
      bottom: 1px;
      @include right(1px);
      width: auto;
      min-width: 25%;
      color: white;
      padding: ($baseline/10) ($baseline/5);
      background-color: black;
    }

    &.focused {
        box-shadow: 0 0 ($baseline/5) 1px $blue;
    }

    &.error {
        box-shadow: 0 0 ($baseline/5) 1px $red;
    }
  }
}