body { font-family: arial; padding: 0; margin: 0; }
h1 { text-align: center; margin: 0;  }
h2 { border-bottom: 1px gray dotted; display: inline; }
#nav { border: 1px gray dotted; height: 1.5em; padding: 0; text-align: center; }
#nav ul { list-style-type: none; padding: 0; margin: 0; }
#nav li { display: inline; padding: 0 0.5em 0 0.5em; font-size: 0.8em; vertical-align: top; }
#trail { border: 1px gray dotted; border-top: 0; margin: 0; font-size: 0.75em; }

.categories li { border: 1px gray dotted; list-style-type: none; display: block; width: 10em; margin: 2em; padding: 1em; float: left; }