html { 
   margin: 0 auto;
   width: 80%;
}

h1,h2,h3,h4 {
   padding: 2em 0 0;
   text-align: center;
   font-family: futura, "Gill Sans", "Trebuchet MS", sans-serif;
}
.threecol {float: left;
   width: 32%;
}