div.round-corners
{
    width: 80%;
    margin: 15px auto 0;
	color: black;
	font-size: 1.2em;
	font-weight: bold;
	text-align: center;
	cursor: pointer;
}

div.box-c
{
    height:20px;
    margin: 0 20px;
    position: relative;
    background: yellow;
}

    div.box-c em b 
    {
       position:absolute;
       font:150px Arial;
       line-height:40px;
       font-weight:normal;
    }
    
    .ctl, .cbl, .ctr, .cbr 
    {
       z-index:9;
       width:20px;
       height:20px;
       color:yellow;    
       overflow:hidden;
       position:absolute;  
       background:transparent;
       
    }
    
    .ctl {top:0; left:-20px;}
    .cbl {bottom:0; left:-20px;}
    .ctr {top:0; right:-20px;}
    .cbr {bottom:0; right:-20px;}

    .ctl b {left:-8px;}
    .ctr b {left:-25px;}
    .cbl b {left:-8px; top:-17px;}
    .cbr b {left:-25px; top:-17px;}
    
div.box-inner
{
    padding: 0 20px;
    background: yellow;
}