body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f2f5;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.login-container {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-container h2 {
    margin-bottom: 20px;
    color: #333;
}

.login-container input[type="text"],
.login-container input[type="password"] {
    width: calc(100% - 40px);
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.login-container label {
    display: block;
    margin: 10px 0;
    font-size: 14px;
    color: #666;
}

.login-container button {
    background-color: #4CAF50;
    color: white;
    border: none;
    padding: 15px 30px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 20px 0;
    transition-duration: 0.4s;
    cursor: pointer;
    border-radius: 5px;
    width: 100%;
}

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

.error-message {
    color: #ff0000;
    font-size: 14px;
    margin-top: 10px;
}