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


.contenedor{ max-width: 75rem; margin: auto;}

header{ width: 100%; background: pink; height: 10rem;}

section{background: blue; display: flex; justify-content: space-around}

.sup 
{ width: 60rem; background: white; height: 30rem; }

.inf 
{ width: 30%; background: yellow; height: 20rem; margin: 1rem 1rem 1rem 1rem; flex-wrap: wrap; justify-content: space-between; justify-content: space-around;}

section {display: flex; justify-content: center; align-items: baseline; align-content: space-between; flex-wrap: wrap;}

aside{background: orange; display: flex; justify-content: space-around; height: 10rem;}

footer {width: 100%; background: red; height: 20rem;}