body { background:#000000; font-size:76%; font-family:verdana, helvetica, arial, sans-serif; 
height:100%; margin:0; padding:0; margin: 0; padding:0; text-align:center; }

#indice { width:100%; margin-top:0px; }

div.principale { position:relative; width:700px; height:438px; 
background:url(immagini/hp.jpg) no-repeat; margin:0 auto; text-align:left; }

a {  }
a span { display:none; }

a#enter { position:absolute; display:block; width:140px; height:46px; 
left:500px; top:126px; background:url(immagini/enter.jpg) no-repeat;}