body {
    background-image: url(../img/fondo.jpg);
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-color: #666999;
    }

.acceso1{
    position: absolute; 
    top: 20%; 
    left:5%; 
    background-color: #efefef; 
    border-width: 1px; 
    border-style: solid; 
    border-color: #e0e0e0; 
    padding-top: 5px; 
    padding-bottom: 5px; 
    padding-right: 5px; 
    padding-left: 5px;
}