.gst-calculator {
max-width: 500px;
margin: 40px auto;
padding: 25px;
background: #fdfdfd;
border-radius: 16px;
box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
font-family: 'Segoe UI', sans-serif;
}
.gst-calculator h2 {
text-align: center;
margin-bottom: 20px;
color: #333;
font-size: 22px;
}
.gst-calculator label {
display: block;
margin-bottom: 6px;
font-weight: 600;
color: #444;
}
.gst-calculator input {
width: 100%;
padding: 12px;
font-size: 16px;
border: 1px solid #ccc;
border-radius: 10px;
margin-bottom: 20px;
box-sizing: border-box;
}
.gst-calculator button {
width: 100%;
padding: 14px;
background-color: #4CAF50;
color: #fff;
border: none;
font-weight: bold;
font-size: 16px;
border-radius: 10px;
cursor: pointer;
transition: background 0.3s ease;
}
.gst-calculator button:hover {
background-color: #43a047;
}
.gst-calculator #gstResult {
text-align: center;
margin-top: 20px;
font-size: 18px;
color: #222;
}
@media (max-width: 600px) {
.gst-calculator {
padding: 20px;
}
.gst-calculator h2 {
font-size: 20px;
}
.gst-calculator input,
.gst-calculator button {
font-size: 15px;
}
}
💰 GST Calculator
function calculateGST() {
const amount = parseFloat(document.getElementById("amount").value);
const gstRate = parseFloat(document.getElementById("gstPercent").value);
const resultDiv = document.getElementById("gstResult");
if (isNaN(amount) || amount <= 0) {
resultDiv.innerHTML = "🚫 Please enter a valid amount.";
return;
}
if (isNaN(gstRate) || gstRate < 0) {
resultDiv.innerHTML = "🚫 Please enter a valid GST percentage.";
return;
}
const gstAmount = (amount * gstRate) / 100;
const totalAmount = amount + gstAmount;
resultDiv.innerHTML = `
💰 GST Calculator
🧾 Original Amount: ₹${amount.toFixed(2)}
➕ GST (${gstRate}%): ₹${gstAmount.toFixed(2)}
💰 Total (Post-GST): ₹${totalAmount.toFixed(2)}
`; }About the Author
