body {font-family: arial, helvetica, sans-serif; } 
.bigmargins {margin-left: 5%; margin-right: 5%;}
.mediummargins {margin-left: 2%; margin-right: 2%;}
.smallerfont {font-size: 85%} 
.largerfont {font-size: 125%} 
.head {font-size:125%; font-weight: bold; text-align: center;}
a {text-decoration: none;} 
a:hover {color: darkblue;}