Post-Purchase HTML/CSS Upsell Pages

I need two eye-catching, conversion-focused HTML pages that appear immediately after a customer completes payment in my eCommerce SaaS platform.

Page one introduces our “Set-Up & Configuration Service,” spotlighting the limited-time $299 price (regularly $1,999). The main button must read “Buy Now,” flow naturally with the copy, and instantly trigger the existing payment link I will supply.

Page two promotes our “Custom Web Design Service” for $199 (regularly $999), again with a prominent “Buy Now” call-to-action wired to its own checkout link.

Both pages should share a bold, colorful visual style—think vibrant accents, strong typography, and confident imagery—while still loading fast and displaying flawlessly on desktop and mobile. I have brand colors, logos, and rough copy ready; you handle layout, responsive HTML/CSS, and any lightweight animations or icons that reinforce value without slowing the page.

Deliverables:
• Two standalone, mobile-responsive HTML files (one per offer)
• Inline CSS or single external stylesheet for easy embed
• Placeholder hooks for the checkout URLs I’ll drop in
• Tested in the latest Chrome, Safari, Firefox, and Edge

If you’ve built high-converting post-purchase or one-click upsell pages before, especially in SaaS environments, I’d love to see a quick snippet or link. Let’s turn new customers into immediate power users.