.F{
position:relative;
left:10px;
top:12.5px;
width:63px;
height:110px;
border-width:15px0 0 16px;
border-color:#000000;
border-style:solid}

.F::before{
position:absolute;
background-color:#000000;
content:'';
left:0px;
top:38px;
width:53px;
height:15px}