body{
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f4f4f4;
    color: #333;
}

.container{
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

button{
    padding: 10px;
    margin-top: 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

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

.navigation{
    margin-top: 20px;
}

.navigation a {
    color: #007BFF;
    text-decoration: none;
    margin: 0 10px;
}
.navigation a:hover{
    text-decoration: underline;
}