creo que seria algo asi
Código CSS:
Ver original#caja {
padding: 20px;
height: auto;
width: auto;
margin-top: 0px;
margin-right: auto;
margin-bottom: 0px;
margin-left: auto;
background-repeat: no-repeat;
background-position: center center;
font-family: Verdana, Geneva, sans-serif;
font-size: 90%;
font-weight: bold;
font-variant: normal;
text-transform: capitalize;
color: #000000;
background-color: #FFCC66;
}