edx-platform/templates/sass/courseware/_amplifier.scss

// JM MOSFET AMPLIFIER
section.tool-wrapper {
  background: #073642;
  border-top: 1px solid darken(#002b36, 10%);
  border-bottom: 1px solid darken(#002b36, 10%);
  @include box-shadow(inset 0 0 0 4px darken(#094959, 2%));
  margin: lh() (-(lh())) 0;
  color: #839496;
  @extend .clearfix;
  display: table;

  div#graph-container {
    background: none;
    @include box-sizing(border-box);
    display: table-cell;
    padding: lh();
    vertical-align: top;
    width: flex-grid(4.5, 9) + flex-gutter(9);

    .ui-widget-content {
      background: none;
      border: none;
      @include border-radius(0);
    }

    canvas {
      width: 100%;
    }

    ul.ui-tabs-nav {
      background: darken(#073642, 2%);
      margin: (-(lh())) (-(lh())) 0;
      padding: 0;
      position: relative;
      width: 110%;
      @include border-radius(0);
      border-bottom: 1px solid darken(#073642, 8%);

      li {
        margin-bottom: 0;
        background: none;
        color: #fff;
        border: none;
        @include border-radius(0);

        &.ui-tabs-selected {
          border-right: 1px solid darken(#073642, 8%);
          border-left: 1px solid darken(#073642, 8%);
          background-color: #073642;

          &:first-child {
            border-left: none;
          }

          a {
            color: #eee8d5;
          }
        }

        a {
          border: none;
          font: bold 12px $body-font-family;
          text-transform: uppercase;
          letter-spacing: 1px;
          color: #839496;

          &:hover {
            color: #eee8d5;
          }
        }
      }
    }
  }

  div#controlls-container {
    @extend .clearfix;
    background: darken(#073642, 2%);
    border-right: 1px solid darken(#002b36, 6%);
    @include box-shadow(1px 0 0 lighten(#002b36, 6%), inset 0 0 0 4px darken(#094959, 6%));
    @include box-sizing(border-box);
    display: table-cell;
    padding: lh();
    vertical-align: top;
    width: flex-grid(4.5, 9);

    div.graph-controls {

      div.music-wrapper {
        padding: 0 0 lh();
        margin-bottom: lh();
        border-bottom: 1px solid darken(#073642, 10%);
        @include box-shadow(0 1px 0 lighten(#073642, 2%));
        @extend .clearfix;

        input#playButton {
          display: block;
          @include button(simple, lighten( #586e75, 5% ));
          font: bold 14px $body-font-family;
          border-color: darken(#002b36, 6%);
          float: right;

          &:active {
            @include box-shadow(none);
          }

          &[value="Stop"] {
            @include button(simple, darken(#268bd2, 30%));
            font: bold 14px $body-font-family;

            &:active {
              @include box-shadow(none);
            }
          }
        }
      }

      div.inputs-wrapper {
        @include clearfix;
        margin-bottom: lh();
        padding: 0 0 lh();
        margin-bottom: lh();
        border-bottom: 1px solid darken(#073642, 10%);
        @include box-shadow(0 1px 0 lighten(#073642, 2%));
        @extend .clearfix;
      }

      p {
        @include inline-block();
        margin: 0;
        -webkit-font-smoothing: antialiased;
        font-weight: bold;
        text-shadow: 0 -1px 0 darken(#073642, 10%);
      }

      ul {
        @include inline-block();
        margin-bottom: 0;

        li {
          @include inline-block();
          margin-bottom: 0;

          input {
            margin-right: 5px;
          }
        }
      }

      div#graph-listen {
        margin-top: 8px;
        margin-right: 20px;
        display: block;
        text-align: right;
        float: left;
        margin-bottom: 0;
      }
    }

    label {
      @include border-radius(2px);
      font-weight: bold;
      color: #fff;
      padding: 3px;
      -webkit-font-smoothing: antialiased;
    }

    //MOSFET AMPLIFIER
    label[for="vinCheckbox"], label[for="vinRadioButton"]{
      color: desaturate(#00bfff, 50%);
    }

    label[for="voutCheckbox"], label[for="voutRadioButton"]{
      color: darken(#ffcf48, 20%);
    }

    label[for="vrCheckbox"], label[for="vrRadioButton"]{
      color: desaturate(#1df914, 40%);
    }

    //RC Filters
    label[for="vcCheckbox"], label[for="vcRadioButton"]{
      color: darken(#ffcf48, 20%);
    }

    //RLC Series
    label[for="vlCheckbox"], label[for="vlRadioButton"]{
      color: desaturate(#d33682, 40%);
    }

    div.schematic-sliders {

      div.top-sliders {
        padding: 0 0 lh();
        margin-bottom: lh();
        border-bottom: 1px solid darken(#073642, 10%);
        @include box-shadow(0 1px 0 lighten(#073642, 2%));
        @extend .clearfix;

      select#musicTypeSelect {
        @include inline-block();
        font: 16px $body-font-family;
        margin-bottom: 0;
      }

      p {
        @include inline-block();
        -webkit-font-smoothing: antialiased;
        text-shadow: 0 -1px 0 darken(#073642, 10%);
        margin: 0 lh(.5) lh() 0;
        font-weight: bold;
      }

      }

      div.slider-label {
        margin-bottom: lh(0.5);
        font-weight: bold;
        text-shadow: 0 -1px 0 darken(#073642, 10%);
        -webkit-font-smoothing: antialiased;
      }

      div.slider {
        margin-bottom: lh(1);

        &.ui-slider-horizontal {
          height: 0.4em;
          background: darken(#002b36, 2%);
          border: 1px solid darken(#002b36, 8%);
          @include box-shadow(none);
        }

        .ui-slider-handle {
          background: lighten( #586e75, 5% ) url('/static/images/amplifier-slider-handle.png') center no-repeat;
          border: 1px solid darken(#002b36, 8%);
          @include box-shadow(inset 0 1px 0 lighten( #586e75, 20% ));
          margin-top: -.3em;

          &:hover, &:active {
            background-color: lighten( #586e75, 10% );
          }
        }
      }
    }
  }
}