body { 
      background-color:#FFFFFF;
     }
.grau {
     background-color:#CCCCCC;	
}
* { color:#000000; 
    font-family:Arial, Helvetica, sans-serif;}
h1 { font-size:200%;
     text-align:center;
       }
h2 { font-size:160%;
     text-align:center;
       }
h3 { font-size:130%;
     text-align:center;
       }
a:link { color:#0000EE; }
a:visited { color:#551A8B; }