.top-left {

background-image: url('images/upperleftcorner-grayb.jpg');
height: 9px;
width: 9px;
font-size: 2px;
}

.top-right {

float: right;
margin-top: -9px;
background-image: url('images/upperrightcorner-gray.jpg'); 
height: 9px; 
width: 9px;
font-size: 2px;
}