body {
    font-family: Arial;
    background: #f5f5f5;
}

.login-container {
    width: 300px;
    margin: 100px auto;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 10px #ccc;
}

input {
    width: 100%;
    margin: 10px 0;
    padding: 8px;
}

button {
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
}

.error {
    color: red;
}