<i class="hamburger --one"></i>
<i class="hamburger --two"></i>
<i class="hamburger --three"></i>

body {
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
}
.hamburger {
  width: 200px;
  height: 120px;
  position: relative;
  margin: 0 20px;
  &::before,
  &::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 20px;
    color: #333;
    background-color: currentColor;
    transition: all .45s ease-in-out;
  }
  &::before {
    top: 0;
    transform: rotate(0);
  }
  &::after {
    bottom: 0;
    box-shadow: 0 -50px currentColor;
  }
}
/*
* Hamburger one on hover
*/
.hamburger.--one:hover {
  &::before {
    top: 50px;
    transform: rotate(45deg);
  }
  &::after {
    box-shadow: 0 0 transparent;
    bottom: 50px;
    transform: rotate(-45deg);
  }
}
/*
* Hamburger two on hover
*/
.hamburger.--two {
  transform: rotateY(0);
  transition: all .45s .15s ease-in-out;
  &:before, &:after {
    transition: all .2s ease-in-out;
  }
  &:hover {
    transform: rotateY(180deg);
    &::before {
      top: 50px;
      transform: rotate(45deg);
    }
    &::after {
      box-shadow: 0 0 transparent;
      bottom: 50px;
      transform: rotate(-45deg);
    }
  }
}
/*
* Hamburger three on hover
*/
.hamburger.--three {
  transition: transform .55s .3s ease-in-out;
  &:before,
  &:after {
    transition: all .3s ease-in-out;
  }
  &:before {
    width: unset;
    height: unset;
    left: 0;
    right: 0;
    top: 50px;
    bottom: 50px;
  }
  &:after {
    top: 0;
    bottom: unset;
    box-shadow: 0 100px currentColor;
  }
  &:hover {
    transform: rotate(45deg);
    &:before {
      left: calc(50% - 10px);
      right: calc(50% - 10px);
      top: -40px;
      bottom: -40px;
    }
    &:after {
      top: 50px;
      box-shadow: 0 0px transparent;
    }
  }
}