body {
    font-family: Arial, sans-serif;
    background-color: #111;
    color: white;
    text-align: center;
    padding: 20px;
}

.container {
    max-width: 400px;
    margin: auto;
    background: #222;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 0px 15px rgba(255, 165, 0, 0.5);
}

h1 {
    font-size: 24px;
    color: #ffa500;
}

p {
    font-size: 14px;
    margin: 10px 0;
}

.calculator {
    margin-top: 20px;
}

label {
    display: block;
    text-align: left;
    font-size: 14px;
    margin-top: 10px;
}

input {
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    border-radius: 5px;
    border: none;
    background: #fff;
    color: black;
}

.btn {
    display: block;
    background: #fbaed2;
    color: white;
    padding: 10px;
    margin-top: 10px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 16px;
    transition: all 0.3s ease-in-out;
    cursor: pointer;
}

.btn:hover {
    background: #708090;
    transform: scale(1.05);
}

.result {
    margin-top: 15px;
    background: #333;
    padding: 10px;
    border-radius: 5px;
    font-size: 14px;
}