html, body, div, h1, h2, h3, h4, h5, h6, ul, ol, dl, li, dt, dd, form, fieldset, table, th, tr, td {margin:0; padding:0; }  
.clearfix:after { content: "."; display: block; height: 0; clear: both;  visibility: hidden;}
.clearfix {	display: inline-block;}
body {margin:0 auto 0 auto;}
p{margin:8px 0;}
.contenedor{width:992px;border:4px #fff solid;margin:10px auto 0;padding:0;}