edx-platform/cms/static/sass/_unit.scss

.unit .main-wrapper,
.subsection .main-wrapper {
  margin: 40px;
}

.main-column {
  float: left;
  width: 70%;
}

.unit-body.published {
  .components > li {
    border: none;

    .rendered-component {
      padding: 0 20px;
    }
  }
}

.unit-body {
  .breadcrumbs {
    border-radius: 3px 3px 0 0;
    border-bottom: 1px solid #cbd1db;
    @include linear-gradient(top, rgba(255, 255, 255, .3), rgba(255, 255, 255, 0) 70%);
    background-color: #edf1f5;
    @include box-shadow(0 1px 0 rgba(255, 255, 255, .7) inset);
    @include clearfix;

    li {
      float: left;
    }

    a,
    .current-page {
      display: block;
      padding: 15px 35px 15px 30px;
      font-size: 14px;
      background: url(../img/breadcrumb-arrow.png) no-repeat right center;
    }
  }

  h2 {
    margin: 30px 40px;
    color: #646464;
    font-size: 19px;
    font-weight: 300;
    letter-spacing: 1px;
    text-transform: uppercase;
  }

  .components {
    > li {
      position: relative;
      z-index: 10;
      margin: 20px 40px;
      border: 1px solid #d1ddec;
      border-radius: 3px;
      background: #fff;
      @include transition(border-color .15s);

      &:hover {
        border-color: #6696d7;

        .drag-handle,
        .component-actions a {
          background-color: $blue;
        }

        .drag-handle {
          border-color: $blue;
        }
      }

      &.editing {
        border-color: #6696d7;

        &:hover {
          .drag-handle,
          .component-actions a {
            background-color: $blue;
          }

          .drag-handle {
            border-color: $blue;
          }
        }
      }

      .xmodule_display {
        padding: 40px 20px 20px;
      }

      .component-actions {
        position: absolute;
        top: 4px;
        right: 4px;
        @include transition(opacity .15s);
      }

      .edit-button,
      .delete-button {
        float: left;
        padding: 3px 10px 4px;
        margin-left: 3px;
        border: 1px solid #fff;
        border-radius: 3px;
        background: #d1ddec;
        font-size: 12px;
        color: #fff;
        @include transition(all .15s);

        &:hover {
          background-color: $blue;
          color: #fff;
        }

        .edit-icon,
        .delete-icon {
          margin-right: 4px;
        }
      }

      .drag-handle {
        position: absolute;
        display: block;
        top: -1px;
        right: -16px;
        z-index: -1;
        width: 15px;
        height: 100%;
        border-radius: 0 3px 3px 0;
        border: 1px solid #d1ddec;
        background: url(../img/drag-handles.png) center no-repeat #d1ddec;
        cursor: move;
        @include transition(all .15s);
      }

      &.new-component-item {
        padding: 0;
        border: 1px solid #8891a1;
        border-radius: 3px;
        @include linear-gradient(top, rgba(255, 255, 255, .3), rgba(255, 255, 255, 0));
        background-color: #d1dae3;
        @include box-shadow(0 1px 0 rgba(255, 255, 255, .2) inset);
        @include transition(background-color .15s, border-color .15s);

        &.adding {
          background-color: $blue;
          border-color: #437fbf;
        }

        .new-component-button {
          display: block;
          padding: 20px;
          text-align: center;
          color: #6d788b;
        }

        h5 {
          margin-bottom: 8px;
          color: #fff;
          font-weight: 700;
        }

        .rendered-component {
          display: none;
          background: #fff;
          border-radius: 3px 3px 0 0;
        }

        .new-component-type, .new-component-template {
          @include clearfix;

          a {
            position: relative;
            float: left;
            width: 100px;
            height: 100px;
            margin-right: 10px;
            margin-bottom: 10px;
            border-radius: 8px;
            font-size: 13px;
            line-height: 14px;
            color: #fff;
            text-align: center;
            @include box-shadow(0 1px 1px rgba(0, 0, 0, .4), 0 1px 0 rgba(255, 255, 255, .4) inset);
            @include transition(background-color .15s);

            &:hover {
              background-color: rgba(255, 255, 255, .2);
            }

            .name {
              position: absolute;
              bottom: 5px;
              left: 0;
              width: 100%;
              padding: 10px;
              @include box-sizing(border-box);
            }
          }
        }

        .new-component-template {
          a {
            height: 60px;
          }
        }

        .new-component,
        .new-component-templates {
          display: none;
          padding: 20px;

          .cancel-button {
            @include blue-button;
            border-color: #30649c;
          }
        }
      }
    }
  }

  .xmodule_display {
    padding: 10px 20px;
  }

  .component-editor {
    @include edit-box;
    display: none;
    padding: 20px;
    border-radius: 0 0 3px 3px;
    @include linear-gradient(top, rgba(0, 0, 0, 0), rgba(0, 0, 0, .1));
    background-color: $blue;
    color: #fff;

    .metadata_edit {
      margin-bottom: 20px;
      font-size: 13px;
    }

    .CodeMirror {
      border: 1px solid #3c3c3c;
    }

    h3 {
      font-size: 18px;
      font-weight: 700;
    }

    h5 {
      margin-bottom: 8px;
      color: #fff;
      font-weight: 700;
    }

    .save-button {
      margin-top: 10px;
      margin: 15px 8px 0 0;
    }
  }
}

.unit-properties {
  .window-contents {
    padding: 10px 20px;
  }

  .unit-actions {
    border-bottom: none;
    padding-bottom: 0;
  }

  .published-alert {
    padding: 10px;
    border: 1px solid #edbd3c;
    border-radius: 3px;
    background: #fbf6e1;
    font-size: 14px;
    line-height: 1.4;

    div {
      margin-top: 15px;
    }
  }

  input[type="radio"] {
      margin-right: 7px;
  }

  .status {
    font-size: 12px;

    strong {
      font-weight: 700;
    }
  }

  .preview-button {
    @include white-button;
    margin-bottom: 10px;
  }

  .publish-button {
    @include orange-button;
  }

  .save-button {
    @include blue-button;
  }

  .save-button,
  .preview-button,
  .publish-button {
    font-size: 11px;
    margin-top: 10px;
    padding: 6px 15px 8px;
  }
}

.unit-history {
  &.collapsed {
    h4 {
      border-bottom: none;
      border-radius: 3px;
    }

    .window-contents {
      display: none;  
    }
  }

  ol {
    border: 1px solid #ced2db;

    li {
      display: block;
      padding: 6px 8px 8px 10px;
      background: #edf1f5;
      font-size: 12px;

      &:hover {
        background: #fffcf1;

        .item-actions {
          display: block;
        }
      }

      &.checked {
        background: #d1dae3;
      }

      .item-actions {
        display: none;
      }

      input[type="radio"] {
        margin-right: 7px;
      }
    }
  }
}

.unit-location {
  .url {
    width: 100%;
    margin-bottom: 10px;
    @include box-shadow(none);
  }

  .window-contents > ol {
    @include tree-view;

    ol {
      .section-item {
        padding-left: 30px;
      }

      .new-unit-item {
        margin-left: 30px;
      }
    }

    ol ol {
      .section-item {
        padding-left: 50px;
      }

      .new-unit-item {
        margin: 0 0 15px 50px;
      }
    }
  }
}

.edit-state-draft {
  .visibility {
    display: none;
  }

  #create-draft {
    display: none;
  }
}

.edit-state-public {
  #save-draft,
  #delete-draft,
  #publish-draft,
  .component-actions,
  .new-component-item,
  #published-alert {
    display: none;
  }

  .drag-handle {
    display: none !important;
  }
}

.edit-state-private {
  #delete-draft,
  #publish-draft,
  #published-alert,
  #create-draft, {
    display: none;
  }
}