CSS
ul {
overflow: hidden;
}
ul li {
color: #fff;
border-top: 1px #91b7ce solid;
border-bottom: 1px #91b7ce solid;
min-width: 150px;
height: 100px;
-webkit-transform: skew(20deg);
-moz-transform: skew(20deg);
-o-transform: skew(20deg);
list-style:none;
float: left;
background: rgb(30,87,153); /* Old browsers */
background: -moz-linear-gradient(top, rgba(30,87,153,1) 0%, rgba(41,137,216,1) 50%, rgba(32,124,202,1) 51%, rgba(125,185,232,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(30,87,153,1)), color-stop(50%,rgba(41,137,216,1)), color-stop(51%,rgba(32,124,202,1)), color-stop(100%,rgba(125,185,232,1))); /* Chrome,Safari4+ */
background: -webkit-linear-gradient(top, rgba(30,87,153,1) 0%,rgba(41,137,216,1) 50%,rgba(32,124,202,1) 51%,rgba(125,185,232,1) 100%); /* Chrome10+,Safari5.1+ */
background: -o-linear-gradient(top, rgba(30,87,153,1) 0%,rgba(41,137,216,1) 50%,rgba(32,124,202,1) 51%,rgba(125,185,232,1) 100%); /* Opera 11.10+ */
background: -ms-linear-gradient(top, rgba(30,87,153,1) 0%,rgba(41,137,216,1) 50%,rgba(32,124,202,1) 51%,rgba(125,185,232,1) 100%); /* IE10+ */
background: linear-gradient(to bottom, rgba(30,87,153,1) 0%,rgba(41,137,216,1) 50%,rgba(32,124,202,1) 51%,rgba(125,185,232,1) 100%); /* W3C */
filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#1e5799', endColorstr='#7db9e8',GradientType=0 ); /* IE6-9 */
}
ul li a{
color: inherit;
display: block;
height: 100px;
line-height: 100px;
text-align: center;
text-decoration: none;
font-size: 25px;
}
ul li:hover {
color: #000;
box-shadow: inset 0 0 10px #000000;
background: rgb(254,255,255); /* Old browsers */
background: -moz-linear-gradient(top, rgba(254,255,255,1) 0%, rgba(221,241,249,1) 35%, rgba(160,216,239,1) 100%); /* FF3.6+ */
background: -webkit-gradient(linear, left top, left bottom,...