body {
    background-color: #f0f8ff; /* Light background for contrast */
}

#calculator-container {
    max-width: 600px;
    margin: auto;
    padding: 20px;
    background-color: #add8e6; /* Light blue background */
    border: 5px solid red; /* Red border */
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    color: black; /* Black text for better visibility */
    font-family: Arial, sans-serif; /* Default font for better readability */
}

h2 {
    text-align: center;
    color: yellow; /* Yellow heading for visibility */
}

.calculator-box {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 20px;
}

label {
    font-size: 16px;
}

input {
    padding: 10px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px;
    font-size: 16px;
    background-color: yellow; /* Yellow button */
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #ffd700; /* Lighter yellow on hover */
}

#result {
    margin-top: 20px;
    text-align: center;
    font-size: 18px;
}