*{margin: 0; padding: 0;box-sizing:border-box;text-align: center;}


body {background: white;}

header{
    background: limegreen;
    height: 10rem;
 text-align: center;}

nav{background: skyblue; height: 3rem;}

main{background: blue; height: 50rem;}


.contenedor{
    max-width: 80rem;
    margin: auto;}

.notas {
    display: flex;
    flex-wrap: wrap;}

.notasseccion{
    background: #0079d1;
    box-sizing: border-box; height: 30rem;}

.notasprincipales{
    background: #ffc761;
    margin:0.5rem;
    padding: 1rem; 
    height: 29rem; 
    width: 38rem;
    display:flex; 
    justify-content: center; 
    align-items: center;}

aside{
    display: flex;
    flex-wrap: wrap;
    position: absolute;}



.secundarias{
    background: #8d0019; 
    height: 20rem;
    width: 80rem;
    display: flex;}



.masleidas{
    background: #ffc761;
    margin: 1.5rem; padding: 1rem; 
    height: 3rem; 
    display: flex;
    height: 15rem; 
    width: 48rem;}


.publicidad{
    background: #ffc761; 
    margin: 1.5rem;
    padding: 1rem; 
    height: 15rem; 
    display: flex; 
    width: 25rem;}


footer{
    height: 10rem; 
    text-align: center;
    background: #0adb0a;}