.ham {
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: transform 400ms;
    -moz-user-select: none;
    -webkit-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }
  .ham-rotate.active {
    transform: rotate(45deg);
  }
  .ham-rotate180.active {
    transform: rotate(180deg);
  }
  .line {
    fill:none;
    transition: stroke-dasharray 400ms, stroke-dashoffset 400ms;
    stroke:#fff;
    stroke-width:5.5;
    stroke-linecap:round;
  } 
  .ham .top {
    stroke-dasharray: 40 160;
  }
  .ham .middle {
    stroke-dasharray: 40 142;
    transform-origin: 50%;
    transition: transform 400ms;
  }
  .ham .bottom {
    stroke-dasharray: 40 85;
    transform-origin: 50%;
    transition: transform 400ms, stroke-dashoffset 400ms;
  }
  .ham.active .top {
    stroke-dashoffset: -64px;
  }
  .ham.active .middle {
    transform: rotate(90deg);
  }
  .ham.active .bottom {
    stroke-dashoffset: -64px;
  }