body {
    font-family: Arial, sans-serif;
    text-align: center;
    background-color: #f2f2f2;
}

h1 {
    color: #333;
}

.calculator {
    background-color: #fff;
    padding: 20px;
    border-radius: 25px;
    box-shadow: 0 0 70px rgba(0, 0, 0, 0.2);
    max-width: 300px;
    margin: 0 auto;
}

label {
    display: block;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 5px;
    margin-bottom: 10px;
    border: 1px solid #ccc;
    border-radius: 3px;
}

button {
    background-color: #0074cc;
    color: #fff;
    padding: 5px 10px;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    margin-right: 10px;
}

button#reset {
    background-color: #0074cc;
}

p {
    font-size: 22px;
    margin-top: 15px;
    color:green;
    font-weight:600;
}

span {
    font-weight: bold;
}