Singapore GST Calculator
Singapore GST Calculator .calculator { max-width: 400px; margin: auto; background: #fff; padding: 20px; border-radius: 10px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); } h2 { text-align: center; margin-bottom: 20px; } label { display: block; margin-top: 10px; font-weight: bold; } input { width: 100%;...