body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #ffffff;
    background-image: linear-gradient(90deg, #1CA7EC, #1F2F98);
}

.calculator {
    background-color: #ffffff;
    width: calc(100vw - 40px);
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
    color: #333333;
}

.form {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555555;
}

input[type="number"] {
    width: calc(100% - 16px);
    padding: 8px;
    margin-bottom: 12px;
    border: 1px solid #cccccc;
    border-radius: 4px;
}

select{
    width: 100%;
    padding: 8px;
    margin-bottom: 12px;
    border: 1px solid #cccccc;
    border-radius: 4px;
}

button {
    width: 100%;
    padding: 10px;
    background-color: #4caf50;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #45a049;
}

#result {
    text-align: center;
    font-size: 18px;
    color: #333333;
}