edx-platform/lms/static/sass/course/courseware/_courseware.scss

html {
  height: 100%;
  max-height: 100%;
}

div.course-wrapper {
  @extend .table-wrapper;

  section.course-content {
    @extend .content;
    padding: 40px;
    line-height: 1.6;

    h1 {
      margin: 0 0 lh();
    }

    p {
      margin-bottom: lh();

      &:empty {
        display: none;
        margin-bottom: 0;
      }
    }

    ul {
      li {
        margin-bottom: lh(.5);
      }
    }

    div#seq_content {
      h1 {
        background: none;
        margin-bottom: lh();
        padding-bottom: 0;
        border-bottom: none;
      }
    }

    ol.vert-mod {
      padding: 0;
      margin: 0;
      line-height: 1.4;
      list-style: none;

      > li {
        @extend .clearfix;
        @extend .problem-set;
        border-bottom: 1px solid #ddd;
        margin-bottom: 15px;
        padding: 0 0 15px;

        .collapsible {
          header {
            margin-bottom: 0;
            padding-bottom: 0;
            font-size: 16px;
          }
        }

        header {
          @extend h1.top-header;
          @include border-radius(0 4px 0 0);
          margin-bottom: -16px;
          border-bottom: 0;

          h1 {
            margin: 0;
            font-size: 1em;
          }

          h2 {
            float: right;
            margin: 12px 0 0;
            text-align: right;
            padding-right: 0;
            border-right: 0;
            font-size: em(14, 24);
          }
        }

        &:last-child {
          border-bottom: none;
          margin-bottom: 0;
          padding-bottom: 0;
        }

        .histogram {
          width: 200px;
          height: 150px;
        }

        ul {
          list-style: disc outside none;
          padding-left: 1em;

          &.discussion-errors {
            list-style: none;
            padding-left: 2em;
          }

          &.admin-actions {
            list-style: none;
          }
        }

        nav.sequence-nav ul li.prev {
          left: 4px;
        }

        nav.sequence-bottom {
          ul {
          list-style: none;
          padding: 0;
          }
        }
      }
    }

    section.xmodule_WrapperModule ol.vert-mod > li {
      border-bottom: none;
    }

    section.tutorials {
      h2 {
        margin-bottom: lh();
      }

      ul {
        margin: 0;
        @include clearfix();
        padding: 0;
        list-style: none;

        li {
          width: flex-grid(3, 9);
          float: left;
          margin-right: flex-gutter(9);
          margin-bottom: lh();
          line-height: lh();

          &:nth-child(3n) {
            margin-right: 0;
          }

          &:nth-child(3n+1) {
            clear: both;
          }

          a {
            font-weight: bold;
          }
        }
      }
    }

    div.staff_info {
      display: none;
      @include clearfix();
      white-space: pre-wrap;
      border-top: 1px solid #ccc;
      padding-top: lh();
      margin-top: lh();
      line-height: lh();
      font-family: Consolas, "Lucida Console", Monaco, "Courier New", Courier, monospace;
    }

    div.ui-tabs {
      border: 0;
      @include border-radius(0);
      margin: 0;
      padding: 0;

      .ui-tabs-nav {
        background: none;
        border: 0;
        margin-bottom: lh(.5);
      }

      .ui-tabs-panel {
        @include border-radius(0);
        padding: 0;
      }
    }
  }

  &.closed {
    section.course-index {
      width: flex-grid(.6);
      overflow: hidden;

      header#open_close_accordion {
        a {
          background-image: url('../images/slide-right-icon.png');
        }
      }

      div#accordion {
        visibility: hidden;
        width: 10px;
        padding: 0;

       nav {
         white-space: pre;
         overflow: hidden;

         ul {
           overflow: hidden;
           white-space: nowrap;
         }
        }
      }
    }

    section.course-content {
      width: flex-grid(11.5) + flex-gutter();
    }
  }
}

.xmodule_VideoModule {
  margin-bottom: 30px;


}

textarea.short-form-response {
    height: 200px;
    padding: 5px;
    margin-top: 5px;
    margin-bottom: 5px;
    width: 100%;
}

section.self-assessment {
    textarea.hint {
        height: 100px;
        padding: 5px;
        margin-top: 5px;
        margin-bottom: 5px;
    }

    div {
        margin-top: 5px;
        margin-bottom: 5px;
    }

    .error {
        font-size: 14px;
        font-weight: bold;
    }
}

section.foldit {
   table {
       margin-top: 10px;
   }
   th {
        text-align: center;
   }
   td {
       padding-left: 5px;
       padding-right: 5px;

   }
}