span,
    span::before,
    span::after {
      transition-property: height, transform;
      transition-duration: 0.5s;

      display: block;
      background: white;
      height: 2px;
      width: 2em;
      border-radius: 2px;
      position: relative;
    }

span,
    span::before,
    span::after {
      transition-property: height, transform;
      transition-duration: 0.5s;

      display: block;
      background: white;
      height: 2px;
      width: 2em;
      border-radius: 2px;
      position: relative;
    }