body { 
    margin: 0;
    padding: 0;
    text-align: center;
}

#promo-wrap {    
    min-height: 400px; 
    padding: 10px 20px; 
    text-align: left;   
}

.left { display: block; float: left; }
.right { display: block; float: right; }
.clear { clear: both; }
.center { text-align: center; }