.mobile {
  display: none;
  position: fixed;
  width: 100%;
  top: 0;
}
.mobile div {
  display: none;
}
.mobile button {
  position: absolute;
  top: 15px;
  right: 15px;
  border: 0;
  text-indent: 200%;
  overflow: hidden;
  background: url("data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAYAAABXAvmHAAAAsklEQVRoQ+2WMQ7EIAwE4/8/mijl6YopnFXAmrQOK5hBxnUd/tXh+788wNcGNaCBJgGvUBNge/k8A2ut1cYSDKiqH+h/BjxAkP4TPd9AGODr8fO60OuIwoEaCAPGeA0govAP8ww4SqSvjMNcmDDF4zBHAbvV53Wh3QjTfjRAhNJ1DaQJU/48A85C5LxZx5dYA03CtBwNUMBu9XldaDfCtB8NEKF0XQNpwpSvASKUrh9v4AbQsjAxOjNvzAAAAABJRU5ErkJggg==")  center no-repeat;
  background-size: 80%;
  width: 50px;
  height: 50px;

}
.mobile button.expanded {
  -webkit-transform: rotate(90deg);
          transform: rotate(90deg);
}
.mobile a {
  display: block;
}

article {
  padding: 0 30px 15px;
}
@media (max-width: 800px) {
  .mobile {
    display: block;
  }
  .desktop {
    display: none;
  }
}