body{ background-image: url(fondo.jpg); repeat:no-repeat; attachment:fixed; position:top center;}
body{ font-size:18px; }
#titulo{ font-size:23px; }
.letra{ font-family:arial; }
.centrar{ text-align:center; }
.izquierda{ text-align:left; }
.derecha{ text-align:right; }


li{ color:black; }


#contenedor{ width:1000px; height:460px; margin-top:105px; }
#contenido{ float:left; width:700px; height:200px; margin-left:65px; }
#contacto{ float:left; width:700px; height:200px; margin-left:160px; }
#pie{ background-color:orange; clear:both; margin-top:450px; }
#cabeza{ clear:both; }

#mision{ float:left; width:700px; height:50px; margin-top:130px; margin-left:175px; }

#menu{ background-color:#333399; width:650px;height:60px; margin-left:100px; }
#resumen{ float:right; widht:400px; height:95px; margin-top:55px; }
#logo{ float:center; clear:both;margin-top:120px; margin-left:160px; }