body {
    font-family: Arial, sans-serif;
    background-color: #1c1;
    margin: 0;
    padding: 0;
}

header {
    background-color: #5a5;
    color: white;
    padding: 10px 0;
    text-align: center;
    font-size: 24px;
}

.container {
    width: 80%;
    margin: 20px auto;
    background-color: white;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

button {
    padding: 10px 20px;
    background-color: #131;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #030;
}

footer {
    background-color: #0a0;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}

nav {
    background-color: #0a0;
    color: white;
    padding: 10px;
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    font-size: 18px;
}

nav a:hover {
    text-decoration: underline;
}