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

.container {
    width: 80%;
    margin: 0 auto;
}

header {
    background: #4CAF50;
    color: white;
    padding: 10px 0;
}

header h1 {
    margin: 0;
}

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

nav ul li {
    display: inline;
    margin-right: 10px;
}

main {
    padding: 20px 0;
}

section {
    margin-bottom: 20px;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 10px 0;
}

img {
    max-width: 150px;
    border-radius: 50%;
}