@media screen and (max-width: 768px) {
  .menu-trigger,
  .menu-trigger span {
    display: inline-block;
    transition: all .4s;
    box-sizing: border-box;
  }
  .menu-trigger {
    position: relative;
    width: 30px;
    height: 26px;
  }
  .menu-trigger span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: #ffffff;
    border-radius: 4px;
  }
  .menu-trigger span:nth-of-type(1) {
    top: 0;
  }
  .menu-trigger span:nth-of-type(2) {
    top: 11px;
  }
  .menu-trigger span:nth-of-type(3) {
    bottom: 0;
  }
  .menu-trigger.active span:nth-of-type(1) {
    -webkit-transform: translateY(11px) rotate(-45deg);
    transform: translateY(11px) rotate(-45deg);
  }
  .menu-trigger.active span:nth-of-type(2) {
    opacity: 0;
  }
  .menu-trigger.active span:nth-of-type(3) {
    -webkit-transform: translateY(-11px) rotate(45deg);
    transform: translateY(-11px) rotate(45deg);
  }
}