#simulationStartStop {
  position: absolute;
  right:30px;
  top: @toolbarHeight + 10 ;
  z-index:1000;

  display: inline-block;
  width: 4em;
  height: 4em;
  background-color: #FFF;
  color: #9e9e9e;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.2);
  border-radius: 2em;
  overflow: hidden;
  transform: translateZ(0);
  transition: all 500ms ease;

  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  &:hover {
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.4);
  }

  &:active {
    -webkit-transform: scale(1.1, 1.1);
    transform: scale(1.1, 1.1);
  }

  &:focus {
    outline: 0;
    border: none;
    color: rgba(0, 0, 0, 0);
  }

  &>span {
    display: block;
    position: relative;
    width: 2em;
    height: 2em;
    transition: all 500ms ease;
    overflow: hidden;
    margin: 1em;

    &>span {
      display: block;
      background-color: @tintColorHIGH;
      position: absolute;
      top: 0;
      left: 0;
      width: 2em;
      height: 2em;
      transition: all 500ms ease;
      border: 1px solid transparent;
    }
  }

  &.play{
    &>span {
      -webkit-transform: translate(1em, 0) scale(1.6, 1);
      transform: translate(1em, 0) scale(1.6, 1);

      &>span {
        -webkit-transform: rotate(-45deg) translate(-1em, -1em) scale(1, 1);
        transform: rotate(-45deg) translate(-1em, -1em) scale(1, 1);
        background-color: @tintColorHIGH;
      }
    }
  }

  &.pause{

    &>span {

      &>span {
        -webkit-transform: scale(0.4, 1) translate(-1.6em, 0);
        transform: scale(0.4, 1) translate(-1.6em, 0);

        &.s3 {
          -webkit-transform: scale(0.4, 1) translate(1.6em, 0);
          transform: scale(0.4, 1) translate(1.6em, 0);
        }
      }
    }
  }
}