body {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: #e4f7b6;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: rgb(131, 220, 236);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

input[type="number"] {
    padding: 10px;
    width: 200px;
    margin: 10px 0;
}

button {
    padding: 10px 20px;
    margin: 5px;
    border: none;
    background-color: #08521a;
    color: white;
    cursor: pointer;
    border-radius: 5px;
}

button:hover {
    background-color: #218838;
}

#result {
    margin-top: 20px;
    font-size: 1.2em;
}