a:link { text-decoration: none; }
a:hover { text-decoration: underline; } 
a:visited { text-decoration: none; }
a:visited:hover { text-decoration: underline; }
TABLE { width: 100%; }
TH { font-weight: bold;
     color: white;
     background-color: black;
     text-align: left;
}
H1 { text-align: center; }