body {
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f4f4f4;
    margin: 0;
}

.container {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 350px;
}

h2 {
    margin-bottom: 15px;
    color: #333;
}

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

button {
    padding: 10px;
    background: #28a745;
    color: white;
    border: none;
    width: 100%;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background: #218838;
}

#result {
    font-size: 16px;
    margin-top: 15px;
    color: #333;
    text-align: left;
}