body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    justify-content: center;
    align-items: center;
    height: auto; 
    margin: 0;
}

.calculator-container {
    background-color: #fff;
    padding: 28px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 350px;
}

h1 {
    text-align: center;
    font-size: 24px;
}

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

input, select {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
}
input[type='checkbox'] {width: auto;}
button {
    width: 100%;
    padding: 10px;
    margin-top: 20px;
    background-color: #007BFF;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

#result {
    margin-top: 20px;
    font-size: 18px;
    text-align: center;
}
input[type=number]{ width:94%;}