#contenido
{
    position: relative;
    float:left;
    width: 35em;
    height: 27em;

}
#fondoinvestigacion
{
    position: relative;
    float: right;
    width: 25em;
    height: 17em;    
    background-image: url(../images/investigacion_y_desarrollo_fondo.jpg);
    background-repeat: no-repeat;
    background-position: right;
}
#contenido p
{
    margin-bottom: 1em;
}