.modal{
	width: 100%;
	height: 100vh;
	background: rgba(0, 0, 0,0.8);

	position: absolute;
	top: 0;
	left: 0;

	display: flex;

	animation: modal 2s 4s forwards;
	visibility: hidden;
	opacity: 0;
}
.contenido{
	margin: auto;
	width: 50%;
	height: 50%;
	background: white;
	border-radius: 5px;
}
#cerrar{
	display: none;
}
#cerrar + label {
	position: fixed;
	color: #fff;
	font-size: 25px;
	z-index: 70;
	background: darkred;
	height: 30px;
	width: 30px;
	line-height: 40px;
	border-radius: 50%;
	right: 30px;
	cursor: auto;

	animation: modal 2s 4s forwards;
	visibility: hidden;
	opacity: 0;
}
#cerrar:checked + label, #cerrar:checked ~ .modal{
	display: none;
}
@keyframes modal{
	100%{
		visibility: visible;
		opacity: 2;
	}
}