Code:
.xenOverlay a.close
{
top: 8px;
right: 8px;
width: 23px;
height: 23px;
background: #2e5660;
border: 2px solid #fff;
border-radius: 50%;
text-align:center;
}
.xenOverlay a.close:before
{
content: '';
color: #fff;
font: 32px/24px Arial;
}
The '' is a rare symbol that not many people take advantage of and they should.