#avisos-marco{ clear:right; width:225px; overflow:auto; position:relative; font-size: 10px; }
#avisos-marco .avisos { padding: 5px; }
#avisos-marco .avisos h3.docs { clear:left; font-weight:normal; margin:0; padding:.5em 0 1em; }

#avisos{ max-height: 500px;}