body { font-family: Arial, sans-serif; font-size: 115%; line-height: 125%; margin-left: 5%; margin-right: 5%; max-width: 40em; }
header:before { content: url(images/logo.jpg); }
body > nav > ul li {display: inline; margin-right: 1%; white-space: nowrap; line-height: 150%; }
main p, li, h1, h2, h3, h4, h5, h6, legend { margin-top: 1em; margin-bottom: 1em; }
h5 { font-size: 100%; }
h4 { font-size: 120%; }
h3 { font-size: 135%; }
h2 { font-size: 150%; }
h1 { font-size: 170%; }
select { display: block; }
input, textarea { display: block; width: 100%; }