body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}
header {
    background-color: #2c3e50;
    color: white;
    padding: 20px;
    text-align: center;
}
nav {
    background-color: #34495e;
    padding: 10px;
    text-align: center;
}
nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
}
main {
    padding: 20px;
}
img.profile {
    max-width: 300px;
    display: block;
    margin: 20px auto;
    border-radius: 10px;
}
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}