.centrar{text-align:center}
.span_style{border:1px solid #ededed;padding:19px 15px 19px 15px;background-color:#fff;text-align:justify;box-shadow:4px 4px 5px #888}

html,
body{
margin:0;
padding:0;
height:100%;
background:url(../img/fondo.png) repeat fixed;
}
#wrapper{
min-height:100%;
position:relative;
}
#header{
}
#content{
padding:10px;
padding-bottom:80px;
}
#footer{
width:100%;
height:50px;
position:absolute;
bottom:0;
left:0;
background:#171717;
border-top:solid 1px black;
text-align:center;
color:#fff;
}

.row > .span3{
 display:inline-block !important;
 border:solid 1px red;
 vertical-align:middle;
}

.justificado
{
text-align:justify
}