header
Section
aside
footer
<body>
<header></header>
<main>
<section></section>
<aside></aside>
</main>
<footer></footer>
body{
display: grid;
grid-template-rows: 100px 1fr 100px;
min-height: 100vh;
}
main{
display:grid;
grid-template-columns:if(media(width >=62.75rem):2fr) if(media(width >=62.75rem):1fr);
}