#fondo{
-webkit-border-radius: 100px;
-moz-border-radius: 100px;
border-radius: 100px;
background-image:url(images/Construccion.jpg);
background-repeat: no-repeat;
background-size: 100% 100%;
background-position: center;
position: center;
width: 800px;
height: 547px;
/-webkit-border-radius: 100px;
/-moz-border-radius: 100px;
/border-radius: 100px;
/background-image:url(images/Construccion.jpg);
/background-repeat: no-repeat;
/background-size: 100% 100%;
/background-position: center;
/position: center;
/width: 800px;
/height: 547px;

}