body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f7f7f7;
    font-family: Arial, sans-serif;
}

.calculator {
    border: 1px solid #ccc;
    border-radius: 5px;
    width: 300px;
    padding: 20px;
    box-shadow: 0px 0px 10px 0px #0000001a;
    background-color: white;
}

.calculator h2 {
    text-align: center;
    margin-bottom: 20px;
}

.calculator label {
    display: block;
    margin-top: 10px;
}

.calculator-input {
    width: 100%;
    height: 40px;
    padding: 5px;
    margin-top: 5px;
    margin-bottom: 20px;
    font-size: 1em;
}

.calculate-button {
    width: 100%;
    height: 40px;
    background-color: #34c759;
    color: white;
    border: none;
    font-size: 1.2em;
    cursor: pointer;
}

.result {
    margin-top: 20px;
    text-align: center;
}

.result h3 {
    margin: 0;
}