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

.container {
    text-align: center;
}

h2 {
    margin-bottom: 20px;
}

input {
    padding: 4px;
    margin-right: 4px;
}

button {
    padding: 4px 10px;
    cursor: pointer;
}

#result {
    margin-top: 20px;
}