.centrar{
padding-left:0.4em;
}

#mainContent .itemfirst{
width:23em;
}
#mainContent .item{
width:15.2em;
float:right;
}

#est1_3 #subContent .itemfirst{
width:23em;
}
#est1_3 #subContent .item{
width:11em;
text-align:right;
}

#mainContent ul{
margin-left:0em;
}

#mainContent ul li{
margin-top:0.7em;
list-style-type:none;
}