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

.container {
    text-align: center;
}

input {
    padding: 8px;
    margin: 5px;
}

button {
    padding: 10px;
    cursor: pointer;
}

#result {
    font-weight: bold;
    color: green;
}