html, body{height:100%}
.abrirLB{
text-decoration:none;
}
#Ventana{
display:none
}
#Ventana:target{
display:flex;
align-items:center;
justify-content:center;
position:absolute;
top:0;
left:0;
background-color:rgba(0,0,0,0.56);
width: 100%;
height: 100%;
}
.contenido{
display:flex;
flex-direction:column;
align-items:center;
justify-content:center;
top:0;
left:0;
margin: 0 auto;
}
.cerrarLB{
align-self:flex-end;
color:white;
text-decoration:none;
}