@animated-burgers/burger-rotate/dist/styles.css

.burger {
  height: 3em;
  width: 3em;
  position: relative;
  font-size: 12px;
  cursor: pointer;
  -webkit-transition: .2s all;
  -o-transition: .2s all;
  transition: .2s all;
  -webkit-tap-highlight-color: transparent; }
  .burger .burger-lines:after {
    left: 0;
    top: -1em; }
  .burger .burger-lines:before {
    left: 1em;
    top: 1em; }
  .burger:after {
    content: '';
    display: block;
    position: absolute;
    height: 150%;
    width: 150%;
    top: -25%;
    left: -25%; }
  .burger .burger-lines {
    top: 50%;
    margin-top: -0.125em; }
    .burger .burger-lines, .burger .burger-lines:after, .burger .burger-lines:before {
      pointer-events: none;
      display: block;
      content: '';
      width: 100%;
      border-radius: 0.25em;
      background-color: white;
      height: 0.25em;
      position: absolute;
      -webkit-transform: rotate(0);
          -ms-transform: rotate(0);
              transform: rotate(0); }
    .burger .burger-lines:after {
      left: 0;
      top: -1em; }
    .burger .burger-lines:before {
      left: 1em;
      top: 1em; }
.burger.burger-rotate .burger-lines:after, .burger.burger-rotate .burger-lines:before {
  width: 2em; }

.burger.burger-rotate .burger-lines, .burger.burger-rotate .burger-lines:after, .burger.burger-rotate .burger-lines:before {
  -webkit-transition: all .2s;
  -o-transition: all .2s;
  transition: all .2s; }

.burger.burger-rotate.open {
  -webkit-transform: rotate(180deg);
      -ms-transform: rotate(180deg);
          transform: rotate(180deg); }
  .burger.burger-rotate.open .burger-lines {
    background-color: transparent; }
  .burger.burger-rotate.open .burger-lines:before, .burger.burger-rotate.open .burger-lines:after {
    left: 0.5em;
    top: 0px; }
  .burger.burger-rotate.open .burger-lines:before {
    -webkit-transform: rotate(135deg);
        -ms-transform: rotate(135deg);
            transform: rotate(135deg); }
  .burger.burger-rotate.open .burger-lines:after {
    -webkit-transform: rotate(-135deg);
        -ms-transform: rotate(-135deg);
            transform: rotate(-135deg); }