body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex; /* Flexbox für zentrierte Ausrichtung */
    justify-content: center; /* Horizontale Zentrierung */
    align-items: center; /* Vertikale Zentrierung */
    height: 100vh; /* Höhe des Viewports */
}

.container {
    width: 90%;
    max-width: 400px;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333;
}

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

label {
    margin: 10px 0 5px;
    color: #555;
}

input[type="text"],
input[type="password"] {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

button {
    padding: 10px;
    background-color: #28a745;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 10px;
}

button:hover {
    background-color: #218838;
}

.error {
    color: red;
    text-align: center;
}