body {
    font-family: Arial, sans-serif;
    background: #1e90ff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #fff;
    padding: 25px;
    border-radius: 10px;
    width: 300px;
    text-align: center;
}

input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #aaa;
    border-radius: 5px;
}

button {
    width: 100%;
    padding: 10px;
    background: #1e90ff;
    color: white;
    border: none;
    border-radius: 5px;
}

button:hover {
    background: #0c65b2;
}

#error {
    color: red;
    margin-top: 10px;
}