edx-platform/lms/static/sass/features/_course-sock.scss

.verification-sock {
  display: inline-block;
  position: relative;
  width: 100%;
  max-width: map-get($container-max-widths, xl);
  margin: $baseline auto 0;
  -webkit-transition: all 0.4s ease-out;
  -moz-transition: all 0.4s ease-out;
  -o-transition: all 0.4s ease-out;
  -ms-transition: all 0.4s ease-out;
  transition: all 0.4s ease-out;

  .action-toggle-verification-sock {
    @include left(50%);
    @include margin-left(-1 * $baseline * 15/2);

    position: absolute;
    top: (-1 * $baseline);
    width: ($baseline * 15);
    color: theme-color("inverse");
    background-color: theme-color("success");
    border-color: theme-color("success");
    background-image: none;
    box-shadow: none;
    -webkit-transition: background-color 0.5s;
    transition: background-color 0.5s;
    cursor: pointer;

    &.active,
    &:focus,
    &:hover {
      color: theme-color("success");
      background-color: theme-color("inverse");
      border-color: theme-color("success");
      background-image: none;
      box-shadow: none;
    }
  }

  .verification-main-panel {
    display: none;
    overflow: hidden;
    border-top: 1px solid $border-color;
    padding: ($baseline * 5/2) ($baseline * 2);
    -webkit-transition: height ease-out;
    transition: height ease-out;

    .verification-desc-panel {
      color: $black-t3;
      position: relative;

      h2 {
        font-size: 1.5rem;
        font-weight: $font-weight-bold;
      }

      h3 {
        font-size: 1.25rem;
      }

      @media (max-width: 960px) {
        .mini-cert {
          display: none;
          border: 1px solid $black-t0;
        }
      }

      .mini-cert {
        @include right($baseline);

        position: absolute;
        top: $baseline;
        width: ($baseline * 13);
      }

      .learner-story-container {
        display: flex;
        max-width: 630px;

        .student-image {
          margin: ($baseline / 4) $baseline 0 0;
          height: ($baseline * 5/2);
          width: ($baseline * 5/2);
        }

        .story-quote > .author {
          display: block;
          margin-top: ($baseline / 4);
          font-weight: 600;
        }

        &:not(:first-child) {
          margin-top: ($baseline * 2);
        }
      }

      .action-upgrade-certificate {
        position: absolute;
        right: $baseline;
        background-color: theme-color("success");
        border-color: theme-color("success");
        color: theme-color("inverse");
        background-image: none;
        box-shadow: none;
        cursor: pointer;

        &:hover {
          background-color: theme-color("inverse");
          color: theme-color("success");
        }

        @media (max-width: 960px) {
          & {
            position: relative;
            margin-top: ($baseline * 2);
          }
        }

        @media (min-width: 960px) {
          &.stuck-top {
            bottom: auto;
            top: $baseline * (52 / 5);
          }

          &.stuck-bottom {
            top: auto;
            bottom: $baseline * (-1 * 3/2);
          }

          &.attached {
            @include right($baseline);

            position: fixed;
            bottom: $baseline;
            top: auto;
          }
        }
      }
    }
  }
}

// Overrides for the courseware page.
.view-courseware {
  .verification-sock {
    margin-top: 0;
    border-top: none;
    border-bottom: none;

    .action-toggle-verification-sock {
      top: (-1 * $baseline * 5/4);

      &:not(.active) {
        color: theme-color("inverse");
        background-color: theme-color("success");
        box-shadow: none;
        border: 1px solid theme-color("success");

        &:hover {
          background-color: $success-color-hover;
        }
      }
    }

    .verification-main-panel {
      border-top: 0;
      border-bottom: 1px solid $border-color;
    }
  }
}