edx-platform/lms/static/sass/course/_gradebook.scss

$cell-border-color: #e1e1e1;
$table-border-color: #c8c8c8;

.no-select {
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -khtml-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

div.gradebook-wrapper {
  section.gradebook-content {
    @extend .content;

    display: block;
    width: 100%;

    @include clearfix();

    .student-search {
      padding: 0 $baseline 0 ($baseline*0.75);
    }

    .student-search-field {
      width: 100%;
      height: 27px;
      padding: 0 ($baseline*0.75) 0 35px;
      box-sizing: border-box;
      border-radius: 13px;
      border: 1px solid $table-border-color;
      background: url('#{$static-path}/images/search-icon.png') no-repeat 9px center $gray-l6;
      font-family: $font-family-sans-serif;
      font-size: 11px;
      box-shadow: 0 1px 4px rgba(0, 0, 0, 0.12) inset;

      @include transition(border-color 0.15s linear 0s);

      &::-webkit-input-placeholder,
      &::-moz-input-placeholder {
        font-style: italic;
      }

      &:focus {
        border-color: #1d9dd9;
      }
    }

    .student-table {
      float: left;
      width: 24%;
      border-radius: 3px 0 0 3px;
      color: #3c3c3c;

      th {
        height: 50px;
      }

      tr:first-child td {
        border-top: 1px solid $table-border-color;
        border-radius: ($baseline/4) 0 0 0;
      }

      tr:last-child td {
        border-bottom: 1px solid $table-border-color;
        border-radius: 0 0 0 ($baseline/4);
      }

      td {
        height: 50px;
        padding-left: $baseline;
        border-bottom: 1px solid $cell-border-color;
        border-left: 1px solid $table-border-color;
        background: $gray-l5;
        font-size: 13px;
        line-height: 50px;
      }

      tr:nth-child(odd) td {
        background-color: #fbfbfb;
      }
    }

    .grade-book-footer {
      position: relative;
      top: 15px;
      width: 100%;
      border: 0;
      box-shadow: 0;
      text-align: center;
      display: inline-block;
    }

    .grades {
      position: relative;
      float: left;
      width: 76%;
      overflow-x: auto;
      overflow-y: hidden;

      .left-shadow,
      .right-shadow {
        @extend %ui-depth4;

        position: absolute;
        top: 0;
        width: 20px;
        pointer-events: none;
      }

      .left-shadow {
        left: 0;
        background-image: -webkit-gradient(linear, left, $shadow-l1, $transparent 20%), -webkit-gradient(linear, left, $shadow-l1, $transparent);
        background-image: -webkit-linear-gradient(left, $shadow-l1, $transparent 20%), -webkit-linear-gradient(left, $shadow-l1, $transparent);
        background-image: -moz-linear-gradient(left, $shadow-l1, $transparent 20%), -moz-linear-gradient(left, $shadow-l1, $transparent);
        background-image: -ms-linear-gradient(left, $shadow-l1, $transparent 20%), -ms-linear-gradient(left, $shadow-l1, $transparent);
        background-image: -o-linear-gradient(left, $shadow-l1, $transparent 20%), -o-linear-gradient(left, $shadow-l1, $transparent);
      }

      .right-shadow {
        right: 0;
        background-image: -webkit-gradient(linear, right, $shadow-l1, $transparent 20%), -webkit-gradient(linear, right, $shadow-l1, $transparent);
        background-image: -webkit-linear-gradient(right, $shadow-l1, $transparent 20%), -webkit-linear-gradient(right, $shadow-l1, $transparent);
        background-image: -moz-linear-gradient(right, $shadow-l1, $transparent 20%), -moz-linear-gradient(right, $shadow-l1, $transparent);
        background-image: -ms-linear-gradient(right, $shadow-l1, $transparent 20%), -ms-linear-gradient(right, $shadow-l1, $transparent);
        background-image: -o-linear-gradient(right, $shadow-l1, $transparent 20%), -o-linear-gradient(right, $shadow-l1, $transparent);
      }
    }

    .grade-table {
      width: 1000px;
      cursor: move;

      @include transition(none);
      @include user-select(none);

      td,
      th {
        width: 50px;
        text-align: center;
      }

      thead th {
        position: relative;
        height: 50px;

        @include linear-gradient(top, $cell-border-color, #ddd);

        font-size: 10px;
        line-height: 10px;
        font-weight: bold;
        text-align: center;
        box-shadow: 0 1px 0 $table-border-color inset, 0 2px 0 rgba(255, 255, 255, 0.7) inset;
        border-left: 1px solid $gray-l3;

        &:first-child {
          border-radius: 5px 0 0;
          box-shadow: 1px 1px 0 $table-border-color inset, 1px 2px 0 rgba(255, 255, 255, 0.7) inset;
          border-left: none;
        }

        &:last-child {
          border-radius: 0 3px 0 0;
          box-shadow: -1px 1px 0 $table-border-color inset, -1px 2px 0 rgba(255, 255, 255, 0.7) inset;
        }

        .assignment {
          margin: 9px 0;
        }

        .type,
        .number,
        .max {
          display: block;
        }

        .max {
          height: 12px;

          @include linear-gradient(top, #c6c6c6, #bababa);

          font-size: 9px;
          line-height: 12px;
          color: $white;
        }
      }

      tr {
        border-right: 1px solid $table-border-color;
      }

      tr:first-child td {
        border-top: 1px solid $table-border-color;
      }

      tr:last-child td {
        border-bottom: 1px solid $table-border-color;
      }

      td {
        height: 50px;
        border-bottom: 1px solid $cell-border-color;
        background: #f3f3f3;
        font-size: 13px;
        line-height: 50px;
        border-left: 1px solid $cell-border-color;
      }

      tr:nth-child(odd) td {
        background-color: #fbfbfb;
      }
    }

    h1 {
      @extend .top-header;
    }
  }

  .student-table tr:hover td,
  .grade-table tr:hover td,
  .student-table tr:focus td,
  .grade-table tr:focus td,
  .student-table tr.highlight td,
  .grade-table tr.highlight td {
    border-color: #74b7d6;

    @include linear-gradient(#8ed6f7, #76cbf4);

    color: #333;

    a {
      color: #333;
    }
  }
}