.usuario{width:98%;margin:5px;font-size:14px;}
 span.left{floar:left;margin-left:5px;}
 span.right{float:right;margin-right:5px;}
 textarea{resize:none;width:100%;height:100%;background-image:transparent;}
 .utilerias{float:left;height:90%;width:40%;margin:10px;margin-left:25px;}
 .avisos{float:left;height:40%;width:50%;margin:10px;}
 .extra{float:left;height:30%;width:50%;margin:60px 10px 10px 10px;} 
 .remarcar{font:bold 20px Arial, Helvetica, sans-serif;}