body {
    font-family: Arial, sans-serif;
    margin: 0;
    line-height: 1.6;
}

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

header ul {
    margin: 0;
    padding: 0;
    list-style: none;
    text-align: center;
}

header ul li {
    display: inline;
    margin: 0 15px;
}

header a {
    color: #fff;
    text-decoration: none;
}

section {
    padding: 100px 20px;
    text-align: center;
}

#projects {
    background: #f4f4f4;
}

.projects-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.project-card {
    background: #fff;
    padding: 20px;
    border: 1px solid #ddd;
    width: 300px;
}