Sales Tax Calculator tool with colorful styling and all its features use any free library...

 

Sales Tax Calculator

Price ($):

Tax Rate (%):

* { box-sizing: border-box; } body { font-family: 'Arial', sans-serif; background: linear-gradient(135deg, #e3f2fd, #bbdefb); margin: 0; padding: 20px; color: #333; } .container { max-width: 400px; margin: auto; background: white; padding: 20px; border-radius: 8px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); } h1 { text-align: center; color: #1976d2; } .input-group { margin-bottom: 15px; } label { display: block; margin-bottom: 5px; } input[type="number"] { width: 100%; padding: 10px; border: 1px solid #ddd; border-radius: 4px; } button { width: 100%; padding: 10px; background-color: #1976d2; color: white; border: none; border-radius: 4px; font-size: 16px; cursor: pointer; transition: background-color 0.3s; } button:hover { background-color: #115293; } .output { margin-top: 20px; padding: 10px; border: 1px solid #ddd; border-radius: 4px; background-color: #f9f9f9; white-space: pre-wrap; /* Preserve whitespace for formatting */ text-align: center; font-weight: bold; } document.getElementById('calculate').addEventListener('click', function() { const price = parseFloat(document.getElementById('price').value); const taxRate = parseFloat(document.getElementById('taxRate').value); const output = document.getElementById('output'); if (!isNaN(price) && !isNaN(taxRate)) { const taxAmount = (price * taxRate) / 100; const totalAmount = price + taxAmount; output.innerHTML = `Total Amount: $${totalAmount.toFixed(2)} (Tax: $${taxAmount.toFixed(2)})`; } else { output.innerHTML = 'Please enter valid numbers for price and tax rate.'; } });