body        {background-color:#;
             background-image:url(objetos/bb4.png);
             background-repeat:no-repeat;
             background-position:center center}
img         {border-style:none}
.centrado   {text-align:center}
#centro     {height:200px}
#logotipo3  {float: left; margin-left:10px}
#texto      {float:left; text-align:left; margin-left:30px; margin-top:50px}   
#saludo     {text-align:center}
#telefono   {text-align:center}

a           {color:blue}
#formulario {text-align:center; margin-left:15px}
#direccion  { text-align:center}
#fecha      {width:300px; float:right; margin-top:-30px}
#certificado{text-align:right; margin-top:-50px}