body {
    background-color: navy;
    color: whitesmoke;
    font-family: Arial, Helvetica, sans-serif;
	font-size: 18px;
}
#cabecera {
    position:absolute;
    background-color: #006;
    cursor: default;
    font-size: 12px;
    left:0px;
    top:0px;
}