<input type="checkbox" id="hi">
<label class="menu" for="hi">
  <div class="bar"></div>
  <div class="bar"></div>
  <div class="bar"></div>
</label>

* {
  box-sizing: border-box;
}
body,
html {
  margin: 0;
  padding: 0;
}
body {
  background: #e78a53; // Just randomly typed this color
}
.menu {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  transition: 0.5s ease;
  height: 50px;
  &:hover .bar {
    box-shadow: 1px 1px 7px 1px RGBa(0, 0, 0, 0.3);
  }
  .bar {
    width: 55px;
    height: 10px;
    background: #fff;
    box-shadow: 1px 1px 3px RGBa(0, 0, 0, 0.4);
    border-radius: 2px;
    transition: 0.4s ease;
    &:not(:first-child) {
      margin-top: 10px;
    }
  }
}
#hi {
  position: absolute;
  left: -999px;
  top: -999px;
}
#hi:checked + .menu {
  transform: translate(-50%,-50%) rotatey(180deg);
  .bar {
    transform: rotatey(180deg) rotatex(360deg);
    &:first-child {
      transform: rotate(-45deg);
      margin-top: 20px;
    }
    &:nth-child(2) {
      opacity: 0;
    }
    &:nth-child(3) {
      margin-top: -30px;
      transform: rotate(45deg);
    }
  }
}