a#mobile-menu-button {
  position: relative;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  width: 40px;
  height: 32px;
}
a#mobile-menu-button span {
  display: block;
  position: absolute;
  height: 6px;
  width: 100%;
  background: white;
  opacity: 1;
  left: 0;
  top: 0;
  transform: rotate(0deg);
  transition: 0.25s ease-in-out;
}
a#mobile-menu-button span:nth-child(2) {
  top: 50%;
  margin-top: -2px;
}
a#mobile-menu-button span:nth-child(3) {
  top: auto;
  bottom: 0;
}
a#mobile-menu-button.open span:nth-child(1) {
  transform: rotate(45deg);
  left: 0;
  top: 50%;
}
a#mobile-menu-button.open span:nth-child(2) {
  opacity: 0;
}
a#mobile-menu-button.open span:nth-child(3) {
  transform: rotate(-45deg);
  right: 0;
  top: 50%;
}
#mobile-menu-content {
  position: fixed;
  z-index: 1000;
  width: 0;
  top: 0;
  left: 0;
  right: 0;
  background: black;
  color: white;
  overflow: hidden;
  transition: all 250ms ease-in;
}
#mobile-menu-content.visible {
  display: block;
}
#mobile-menu-content.loading {
  background-image: url(../images/loader.gif);
  background-repeat: no-repeat;
  background-position: center;
}