body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
    color: #333;
    text-align: center;
}

header {
    background-color: #222;
    padding: 20px;
    color: white;
}

header h1 {
    margin: 0;
    font-size: 2.5em;
}

nav ul {
    list-style-type: none;
    padding: 0;
}

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

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

#intro {
    padding: 50px;
    background-color: #fff;
}

.project-card {
    background-color: #ddd;
    margin: 20px auto;
    padding: 20px;
    width: 80%;
    box-shadow: 0px 2px 5px rgba(0,0,0,0.1);
}

footer {
    background-color: #222;
    color: white;
    padding: 20px;
}