SKEW on specific angle
HTML
<div>TEST</div>
CSS
div{
line-height:50px;
color:#fff;
text-align:center;
background:#344769;
width:20%;
position:relative;
}
div:after{
content:'';
position:absolute;
width:100%;
height:100%;
left:0;
background:#344769;
z-index:-1;
-ms-transform-origin: 0 100%;
-webkit-transform-origin:0 100%;
transform-origin: 0 100% ;
-ms-transform: skewX(-30deg);
-webkit-transform: skewX(-30deg);
transform: skewX(-30deg) ;
}