article, aside, footer, header, nav, section {display: block;}
article {background-color:#fefefe;}
nav, aside.leftside div.modul, aside.rightside {border-right:1px solid #cccccc;border-bottom:1px solid #bbbbbb;}
nav > ul > li > a {background-color:#FF6600;}
nav > ul > li > ul > li > a {background-color:#cccccc;}
aside.rightside div.modul h3, aside.leftside div.modul h3 {background-color:#cccccc;}
footer {width:100%;height:100px;position:static;margin-top:100px;}
#buttons {width:300px;float:right;}
#catalog {width:600px;float:left;}