.fondoinicio {
            background-color: rgba(255, 255, 255, 0.5);
            filter: alpha(opacity=50);
            opacity: 0.7;
            border-radius: 5px 5px 5px 5px;
        }

.encabezado{
    border-top:0px;
    padding-top: 50px;
}

.cabeza{
font-size:30px; 
background-color:orange; 
color:#4986FC;
 text-align:center;
  margin-left:20%;
  text-shadow:2px 2px 2px black;
    }