.at-content{width:968px; float: left; margin-bottom:20px; background: #f2f2f2; border: 1px solid #cdcdcd; border-bottom:2px solid #cdcdcd; border-right:2px solid #cdcdcd; border-radius: 5px;}
.at-content .at-tit{position: relative; padding:15px 35px 15px 15px; float: left; border-top-left-radius:5px; font-size:17px; color: #fff; font-weight:bold; min-width: 532px; display: inline-block; background: url(../imagens/bg-topo-atuacao.gif) top left repeat-x}
.at-content .at-tit .at-det{width: 33px; height: 50px; position: absolute; top:0; right:0; display: block;  background: url(../imagens/detalhe-topo-atuacao.gif) top left no-repeat}
.at-content .at-cont{width:948px; float: left; padding: 10px; line-height: 20px;}