@import url('https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,100..900;1,100..900&display=swap');

body {
    font-family: 'Roboto', sans-serif;
}

header, main, footer {
    max-width: 640px;
    margin: 1rem auto;
    border: 1px solid #ccc;
    padding: 1rem;
    background-color: rgb(200, 225, 250);
}

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

section {
    background-color: white;
    padding: 1rem;
}

@media screen and (min-width: 500px) {
    header {
        background-color: black;
        color: white;
    }
    main {
        grid-template-columns: 1fr 1fr;
    }
}