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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem;
    position: fixed;
    width: 100%;
    top: 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

nav ul li a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
}

main {
    margin-top: 80px;
}

section {
    padding: 4rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    background-color: #f4f4f4;
    text-align: center;
    padding: 6rem 2rem;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.project-card {
    background-color: #f4f4f4;
    padding: 1.5rem;
    border-radius: 8px;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        text-align: center;
    }

    nav ul {
        margin-top: 1rem;
        flex-direction: column;
    }

    nav ul li {
        margin: 0.5rem 0;
    }
}