side-panel {
  position: absolute;
  z-index: 7001;
  .opener {
    cursor: pointer;
    width: 40px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    display: inline-block;
    vertical-align: middle;
    border-radius: 25px;
    transform: rotate(90deg);
    -webkit-transform: rotate(90deg);
    font-size: 24px;
    margin-top: -6px;
    @include run-transition(transform);
    @include run-transition(-webkit-transform);
  }

  .opener::after {
    content: "\25B2";
    display: block;
    margin-top: -3px;
  }
  &.hidden {
    .toggle {
      width: 0;
    }
    .opener {
      transform: rotate(-90deg);
      -webkit-transform: rotate(-90deg);
    }
  }
  .toggle {
    position: absolute;
    width: 300px;
    box-sizing: border-box;
    @include run-transition(width);
    overflow: hidden;
    top: 0;
    left: 55px;
    .content {
      padding: 15px;
      width: 300px;
      box-sizing: border-box;
    }
  }
}
side-panel + app-title {
  float: left;
  margin-top: 0;
  margin-left: 50px;
}