body {
    font-family: 'Roboto', sans-serif;
    background-color: #f4f4f9;
    color: #333;
    margin: 0;
    padding: 0;
}

header {
    background-color: #6a9fb5;
    padding: 20px;
    text-align: center;
    color: white;
    font-size: 24px;
}

nav a {
    color: #fff;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}

main {
    max-width: 800px;
    margin: 30px auto;
    padding: 20px;
    background-color: #ffffff;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

footer {
    background-color: #6a9fb5;
    padding: 10px;
    text-align: center;
    color: white;
    position: fixed;
    bottom: 0;
    width: 100%;
}

.button {
    background-color: #6a9fb5;
    border: none;
    color: white;
    padding: 10px 20px;
    text-align: center;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius: 5px;
}