@import url(https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css);

body {
  background: #f2f2f2;
}

ul {
  position: relative;
  transform: rotate(-35deg) skew(20deg,5deg);
}

.list-item {
  background: #000;
  color: #575757;
  text-align: center;
  height: 2.5em;
  width: 4em;
  vertical-align: middle;
  line-height: 2.5em;
  border-bottom: 1px solid #060606;
  position: relative;
  display: block;
  text-decoration: none;
  box-shadow: -2em 1.5em 0 #e1e1e1;
  transition: all .25s linear;
}
  .list-item:hover {
    background: #ff6e42;
    color: #fffcfb;
    transform: translate(.9em, -.9em);
    transition: all .25s linear;
    box-shadow: -2em 2em 0 #e1e1e1;
}
    .list-item:hover:before,
    .list-item:hover:after {
      transition: all .25s linear;
    }

    .list-item:hover:before {
      background: #b65234;
      width: 1em;
      top: .5em;
      left: -1em;
    }

    .list-item:hover:after {
      background: #b65234;
      width: 1em;
      bottom: -2.5em;
      left: 1em;
      height: 4em;
    }


  .list-item:before,
  .list-item:after {
    content: '';
    position: absolute;
    transition: all .25s linear;
    width: .5em;
  }

  .list-item:after {
    height: 4em;
    background: #181818;
    bottom: -2.25em;
    left: 1.5em;
    transform: rotate(90deg) skew(0,45deg);
  }

  .list-item:before {
    height: 2.5em;
    background: #121212;
    top: .25em;
    left: -.5em;
    transform: skewY(-45deg);
  }