<!DOCTYPE html>
<html>
<head>
<title>GST Calculator</title>
<style>
body {
font-family: Arial, sans-serif;
text-align: center;
}
.container {
max-width: 400px;
margin: 0 auto;
padding: 20px;
}
h1 {
margin-bottom: 20px;
}
.input-group {
margin-bottom: 10px;
}
.input-group label {
display: block;
margin-bottom: 5px;
}
.input-group input {
width: 100%;
padding: 5px;
border: 1px solid #ccc;
border-radius: 3px;
}
.btn {
background-color: #4CAF50;
color: white;
padding: 10px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
.result {
margin-top: 20px;
font-weight: bold;
}
</style>
</head>
<body>
<div class="container">
<h1>GST Calculator</h1>
<div class="input-group">
<label for="amount">Amount (excluding GST):</label>
<input type="number" id="amount" min="0">
</div>
<div class="input-group">
<label for="gstRate">GST Rate (%):</label>
<input type="number" id="gstRate" min="0" max="100">
</div>
<button class="btn" onclick="calculateGST()">Calculate GST</button>
<div class="result" id="result"></div>
</div>
<script>
function calculateGST() {
var amount = parseFloat(document.getElementById('amount').value);
var gstRate = parseFloat(document.getElementById('gstRate').value);
if (isNaN(amount) || isNaN(gstRate)) {
document.getElementById('result').textContent = 'Please enter valid numbers.';
return;
}
var gstAmount = (amount * gstRate) / 100;
var totalAmount = amount + gstAmount;
document.getElementById('result').textContent = 'GST Amount: ' + gstAmount.toFixed(2) + ' | Total Amount: ' + totalAmount.toFixed(2);
}
</script>
</body>
</html>