body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 500px;
    margin: auto;
    padding: 20px;
}

header h1 {
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    margin: 10px 0 5px;
}

input, button {
    padding: 10px;
    margin-bottom: 10px;
}

button {
    background-color: #4CAF50;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

@media (max-width: 600px) {
    .container {
        width: 100%;
        padding: 10px;
    }
}