html {
    font-size: 62.5%;
}

body {
    font-size: 2.8rem;
}

h1 {
    font-size: 5rem;
    line-height: 1.5em;
    font-weight: bold;
}

html,
body {
    width: 100%;
    height: 100%;
}

main {
    height: 100dvh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

@media screen and (max-width: 700px) {
    body {
        font-size: 1.8rem;
    }

    h1 {
        font-size: 3.5rem;
        line-height: 1.5em;
        font-weight: bold;
    }
}