article h3 { border-top:1px solid gray; }

#base { margin:0; }
#base { clear:both; margin:2em auto 1em auto; width:620px; display:relative;}
#base h3 { clear:both; margin:2em 0 0 0; }
#base p.detail { border-bottom:1px solid gray; padding:1em; margin:0 0 0 0; }
#base ul { width:100%; margin: 0 auto; padding:0; }
#base div.section ul li { list-style-type:none; padding:4px; overflow: scroll; border-bottom:1px solid gray; }

#base ul li img{ float:left; width:160px; height:100px; margin-right:20px;}

#base span.niveaux { display:block; float:right; }

#base ul li.invisible { opacity:0.35; background: gray; }