body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    margin: 0;
    padding: 0;
}

header {
    background-color: #007bff;
    color: white;
    padding: 10px 0;
}

header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    margin: 0;
}

nav a {
    color: white;
    text-decoration: none;
    margin-left: 15px;
}

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

main.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h2 {
    text-align: center;
}

p {
    line-height: 1.6;
}

button {
    display: block;
    width: 200px;
    margin: 20px auto;
    padding: 10px;
    border: none;
    border-radius: 4px;
    background-color: #007bff;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

.hidden {
    display: none;
}

footer {
    background-color: #007bff;
    color: white;
    text-align: center;
    padding: 10px 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}