.Z{
position:relative;
top:12.5px;
left:10px;
width:90px;
height:95px;
border-width:15px0 15px0;
border-color:#000000;
border-style:solid;
}

.Z:before{
position:absolute;
background-color:#000000;
content:'';
left:36px;
top:0;
width:18px;
height:95px;
-webkit-transform:skew(-37deg,0);
-moz-transform:skew(-37deg,0);
-ms-transform:skew(-37deg,0);
-o-transform:skew(-37deg,0);
transform:skew(-37deg,0)}