body {
    font-family: Arial, sans-serif;
    background: #f0f2f5;
    margin: 0;
    padding: 0;
}

.container {
    width: 400px;
    margin: 50px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

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

button {
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.alert {
    color: red;
    margin: 5px 0;
}