.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; }
@-webkit-keyframes burgerAnimationSlide {
  0% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
    opacity: 1; }
  25% {
    opacity: 0; }
  49% {
    -webkit-transform: translateX(-0.7em);
            transform: translateX(-0.7em);
    opacity: 0; }
  50% {
    -webkit-transform: translateX(0.7em);
            transform: translateX(0.7em);
    opacity: 0; }
  51% {
    opacity: 0; }
  75% {
    opacity: 1; }
  100% {
    -webkit-transform: translateX(0px);
            transform: translateX(0px);
    opacity: 1; } }

@keyframes burgerAnimationSlide {
  0% {
    -webkit-transform: translateX(0);
            transform: translateX(0);
    opacity: 1; }
  25% {
    opacity: 0; }
  49% {
    -webkit-transform: translateX(-0.7em);
            transform: translateX(-0.7em);
    opacity: 0; }
  50% {
    -webkit-transform: translateX(0.7em);
            transform: translateX(0.7em);
    opacity: 0; }
  51% {
    opacity: 0; }
  75% {
    opacity: 1; }
  100% {
    -webkit-transform: translateX(0px);
            transform: translateX(0px);
    opacity: 1; } }

.burger.burger-slide .burger-lines {
  -webkit-transition: .1s all .15s;
  -o-transition: .1s all .15s;
  transition: .1s all .15s; }
  .burger.burger-slide .burger-lines:after, .burger.burger-slide .burger-lines:before {
    width: 2em;
    -webkit-transition: .1s all .15s;
    -o-transition: .1s all .15s;
    transition: .1s all .15s; }

.burger.burger-slide:not(.open) {
  -webkit-animation-name: burgerAnimationSlide;
          animation-name: burgerAnimationSlide;
  -webkit-animation-duration: 0.4s;
          animation-duration: 0.4s;
  background-color: transparent; }

.burger.burger-slide.open .burger-lines {
  -webkit-animation-name: burgerAnimationSlide;
          animation-name: burgerAnimationSlide;
  -webkit-animation-duration: 0.4s;
          animation-duration: 0.4s;
  background-color: transparent; }
  .burger.burger-slide.open .burger-lines:before, .burger.burger-slide.open .burger-lines:after {
    left: 0.5em;
    top: 0px; }
  .burger.burger-slide.open .burger-lines:before {
    -webkit-transform: rotate(-45deg);
        -ms-transform: rotate(-45deg);
            transform: rotate(-45deg); }
  .burger.burger-slide.open .burger-lines:after {
    -webkit-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
            transform: rotate(45deg); }