body {
    font-family: Arial, sans-serif;
    background: #f5f5f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
input {
    margin: 5px 0;
    padding: 8px;
    width: 100%;
}
button {
    padding: 10px;
    width: 100%;
    background: #007bff;
    border: none;
    color: #fff;
    border-radius: 5px;
}