body { font-size: 1.5em; background: #DDDDDD; color: Black; margin-left:auto;margin-right:auto; max-width: 1024;}

h2 { margin-top: 0.4em; margin-bottom: 0.1em;font-size: 1.1em;}
h3 { margin-left: 5%; font-size: 1.0em; color: purple;}
.highlight { color: purple;} 
nav {text-align: center;}