body {
    background-color: #e0f7fa;
    color: #004d40;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 40px;
    margin: 0;
}

header {
    background-color: #004d40;
    color: #ffffff;
    padding: 20px;
    text-align: center;
    font-size: 24px;
    border-bottom: 2px solid #00796b;
}

nav a {
    color: #e0f7fa;
    text-decoration: none;
    padding: 14px 20px;
    display: inline-block;
}

nav a:hover {
    background-color: #00796b;
    color: #ffffff;
}

footer {
    background-color: #004d40;
    color: #ffffff;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}