body{
    font-family: 'Roboto';
}

header,main,footer{
    max-width: 640px;
    margin: 1rem auto;
    border: 1px solid #92c3cc;
    padding: 1rem;
    background-color: aquamarine;

}

main{
    display:grid;
    grid-template-columns:1fr;
    grid-gap:1rem;
} 

section{
    padding: 1rem;
    background-color: #fff;
}