@import url(https://netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.min.css);
* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  list-style:none;
  margin:0;
  padding:0;
}

html {
  width: 100%;
  height: 100%;
}

body {
  width: 100%;
  height: 100%;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-box;
  display: box;
  -webkit-box-align: center;
  -moz-box-align: center;
  -ms-box-align: center;
  box-align: center;
  -webkit-box-pack: center;
  -moz-box-pack: center;
  -ms-box-pack: center;
  box-pack: center;
  -webkit-transform: translate3d(0, 0, 0);
}

.clearfix {
  zoom: 1;
}
.clearfix:before, .clearfix:after {
  content: "\0020";
  display: block;
  height: 0;
  overflow: hidden;
}
.clearfix:after {
  clear: both;
}

body {
  background: #f2f2f2;
}

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

.list-item {
  background: #000000;
  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;
  -webkit-box-shadow: -2em 1.5em 0 #e1e1e1;
  -moz-box-shadow: -2em 1.5em 0 #e1e1e1;
  box-shadow: -2em 1.5em 0 #e1e1e1;
  -webkit-transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  -moz-transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  -o-transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
}
.list-item:hover {
  background: #ff6e42;
  color: #fffcfb;
  top: -0.5em;
  left: 0.5em;
  -webkit-transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  -moz-transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  -o-transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  transition: top 0.25s linear, left 0.25s linear, background 0.1s linear, color 0.1s linear;
  -webkit-box-shadow: -2em 2em 0 #e1e1e1;
  -moz-box-shadow: -2em 2em 0 #e1e1e1;
  box-shadow: -2em 2em 0 #e1e1e1;
}
.list-item:hover:before, .list-item:hover:after {
  -webkit-transition: all 0.25s linear;
  -moz-transition: all 0.25s linear;
  -o-transition: all 0.25s linear;
  transition: all 0.25s linear;
}
.list-item:hover:before {
  background: #b65234;
  width: 1em;
  top: 0.5em;
  left: -1em;
}
.list-item:hover:after {
  background: #b65234;
  width: 1em;
  bottom: -2.5em;
  left: 1em;
  height: 4em;
}
.list-item:before, .list-item:after {
  -webkit-transition: all 0.25s linear;
  -moz-transition: all 0.25s linear;
  -o-transition: all 0.25s linear;
  transition: all 0.25s linear;
}
.list-item:after {
  content: "";
  position: absolute;
  height: 4em;
  background: #181818;
  width: 0.5em;
  bottom: -2.25em;
  left: 1.5em;
  -webkit-transform: rotate(90deg) skew(0deg, 45deg);
  -moz-transform: rotate(90deg) skew(0deg, 45deg);
  -ms-transform: rotate(90deg) skew(0deg, 45deg);
  -o-transform: rotate(90deg) skew(0deg, 45deg);
  transform: rotate(90deg) skew(0deg, 45deg);
}
.list-item:before {
  content: "";
  position: absolute;
  height: 2.5em;
  background: #121212;
  width: 0.5em;
  top: 0.215em;
  left: -0.45em;
  -webkit-transform: skewY(-45deg);
  -moz-transform: skewY(-45deg);
  -ms-transform: skewY(-45deg);
  -o-transform: skewY(-45deg);
  transform: skewY(-45deg);
}