*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    background-color: lightgrey;
    color: black;
    padding-bottom: 60px;
    font-family: sans-serif;
}

img {
    max-width: 100%;
    height: auto;
}

.wrapper {
    max-width: 940px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 10fr 1fr;
    gap: 10px;
    grid-auto-rows: minmax(100px, auto);
}

.banner {
    text-align: center;
    grid-column-start: 2;
}

.banner img {
    display: block;
    width: 100%;
    height: auto;
    margin-inline: auto;
}

.content {
    grid-column-start: 2;
}

.links {
    grid-column-start: 2;
}

.menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    margin: 0;
    padding: 0;
    background-color: #333;
}

.menu li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

.menu li a:hover {
    background-color: #111;
}

footer {
    position: fixed;
    background-color: #333;
    left: 0;
    bottom: 0;
    width: 100%;
    color: white;
    text-align: center;
    padding: 10px;
}

@media (max-width: 600px) {
    .wrapper {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 0 8px;
        grid-auto-rows: auto;
    }

    .banner,
    .links,
    .content {
        grid-column: 1;
        grid-row: auto;
    }

    .menu {
        flex-direction: column;
    }

    .menu li a {
        padding: 16px;
    }

    footer {
        font-size: 0.85rem;
    }
}

@media (prefers-color-scheme: dark) {
    body {
        background: #222;
        color: white;
    }
    footer {
        background-color: #333;
    }
}