* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #333;
    padding: 1em;
    text-align: center;
}

header h1 {
    color: #fff;
}

nav a {
    color: #ccc;
    margin: 0 1em;
    text-decoration: none;
}

#hero {
    background: #555;
    color: #fff;
    text-align: center;
    padding: 3em 0;
}

.btn {
    background-color: #444;
    color: #fff;
    padding: 0.5em 1em;
    text-decoration: none;
    display: inline-block;
    margin-top: 1em;
}

section {
    padding: 2em;
    text-align: center;
}

#gallery .gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1em;
}

footer {
    background-color: #333;
    color: #ccc;
    text-align: center;
    padding: 1em;
    margin-top: auto;
}