sanwich

css

body {
  background-color: #333;
}
#sandwich {
  width: 100px;
  height: 100px;
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  margin: auto;
}
.sw-topper {
  position: relative;
  top: 0;
  width: 100px;
  height: 10px;
  background: #fff;
  border: none;
  border-radius: 4px 4px 4px 4px;
  transition: transform 0.5s, top 0.2s;
/* transition-delay: 0.2s, 0s; */
}
.sw-bottom {
  position: relative;
  width: 100px;
  height: 10px;
  top: 20px;
  background: #fff;
  border: none;
  border-radius: 4px 4px 4px 4px;
  transition: transform 0.5s, top 0.2s;
  transition-delay: 0.2s, 0s;
}
.sw-footer {
  position: relative;
  width: 100px;
  height: 10px;
  top: 40px;
  background: #fff;
  border: none;
  border-radius: 4px 4px 4px 4px;
  transition: all 0.5s;
  transition-delay: 0.1s;
}
#sandwich.active .sw-topper {
  top: 15px;
  transform: rotate(140deg);
}
#sandwich.active .sw-bottom {
  top: 5px;
  transform: rotate(-140deg);
}
#sandwich.active .sw-footer {
  opacity: 0;
  top: 0;
  transform: rotate(180deg);
}

html

<div id='sandwich'>
  <div class='sw-topper'></div>
  <div class='sw-bottom'></div>
  <div class='sw-footer'></div>
</div>

js

$("#sandwich, .menu_item").click(function() {
  $("#sandwich").toggleClass("active");
});