#head728x90
{
    width:728;
    height:90;
}
#head260x90
{
    width:260;
    height:90;
}
#home320x250
{
    width:320;
    height:250;
}
#secciones320x250
{
    width:320;
    height:250;
}
#secciones200x200
{
    width: 150;
    height: 200;
    text-align:center;
}
#articulo468x60
{
    width: 468;
    height: 60;
    text-align:center;
}