estiloEstructura
body{
	background-color: #FBE28A;
}
header{
	border: 5px solid green;
}
nav{
border: 5px solid navy;
}
section{
border: 5px solid navy;
}
aside{
border: 2px dashed red;
}
article{
border: 2px dashed gray;
}
footer{
	border: 5px solid pink;
}