* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    display: grid;
    grid-template-rows: auto 1fr auto;
    min-height: 100vh;
    color: #333;
}

header {
    background-color: #4CAF50;
    color: white;
    display: grid;
    grid-template-columns: 1fr auto;
    padding: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    list-style: none;
    display: flex;
}

    nav ul li {
        margin-left: 20px;
    }

        nav ul li a {
            color: white;
            text-decoration: none;
        }

main {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
}

@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
        align-items: center;
    }

        nav ul li {
            margin: 10px 0;
        }
}