html, body {
    height: 100%;
}

body {
    background-color: #fff;
    background: radial-gradient(circle at center, #fff 0%, #f8f8f8 75%, #ebebeb 100%);
    color: #222;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

main {
    padding: 1rem;
    text-align: center;
}

h1 {
    font-size: 2.5rem;
    line-height: 1.1;
    margin: 0;
}

h1::after {
    content: "";
    background-color: #ffe800;
    background: repeating-linear-gradient(45deg, #ffe800, #ffe800 0.5rem, #222 0.5rem, #222 1rem);
    display: block;
    height: 0.5rem;
    margin-top: 1rem;
}

p {
    margin: 1rem 0 0 0;
}

@media screen and (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
}