What every frontend agency says:
What Protocloud actually delivers:
No benchmark promised 
Lighthouse 90+ guaranteed 
CSS3 project costs depend on scope and complexity. A Core Web Vitals fix and CSS optimisation for an existing site starts from $4,000. A full responsive CSS3 rebuild with design token system starts from $5,000. A complete design system (Tailwind config, Storybook, 60+ components, dark mode) ranges from $8,000–$20,000. AI-personalised UI additions range from $3,000–$8,000 depending on backend integration needs. Fixed-price quote before any development starts.
A focused Core Web Vitals fix typically takes 1–2 weeks. A mobile-first CSS responsive rebuild takes 3–5 weeks. A complete design system with Storybook documentation takes 6–10 weeks. Timeline depends on the number of components, complexity of animations, and extent of cross-browser testing required. We provide milestone-based timelines with specific dates in every contract.
Yes – LCP under 2.5s, CLS under 0.1, and FID under 100ms are contractual targets on every Protocloud CSS project. We deliver a Lighthouse report showing these scores in a production-equivalent environment before final invoice. If we miss targets, we fix them at no additional charge before handover.
Yes – we work within your existing tech stack. We implement CSS3 via Tailwind CSS (most common), SCSS modules, CSS Modules for Next.js, or plain CSS3 with Custom Properties. For Shopify, we customise theme CSS within the Liquid template structure. For WordPress, we implement CSS via child theme or custom plugin. We adapt to your stack rather than requiring you to migrate.
Yes – dark mode implementation is a standalone service starting from $3,000. We implement using CSS Custom Properties and the prefers-color-scheme media query – zero JavaScript flash, system preference detection on first load, and a manual toggle with preference persistence. We also handle WCAG 2.1 AA contrast compliance in both light and dark themes.
Three months of free post-launch CSS support is included – cross-browser regression fixes, CWV monitoring and minor adjustments under 2 hours of effort. Design token updates (brand colour or typography changes) within the support period are also included. After the support period, we offer monthly retainer packages from $1,000/month for ongoing CSS maintenance and feature additions.
There is a significant difference between functional CSS and optimised CSS. A developer who can “write CSS” typically ships 300KB+ bundles, never tests in Safari, and has no design token system. A CSS specialist delivers 15KB PurgeCSS output, Lighthouse 90+ CWV, WCAG 2.1 AA compliance, and a design system that scales. The conversion uplift from proper CSS typically pays for the project within 60 days.
🛡 Guarantee: 🛡 Performance Guarantee: We deliver Lighthouse CWV scores before handover. LCP under 2.5s, CLS under 0.1. If we miss these targets, we fix them before final invoice.
Page builders (Webflow, Squarespace, Wix) are excellent for basic marketing sites. We recommend them for those use cases. Where they fall short: custom SaaS dashboards, complex interactive states, WCAG compliance, specific brand expression, performance optimisation (most page builders ship 500KB+ CSS), and design system consistency across multiple surfaces. If a page builder serves your need, we will say so honestly.
🛡 Guarantee: 🛡 Honest Tool Recommendation: If a page builder is genuinely the right solution for your project, we will tell you in the free strategy session before taking any payment.
We test on real devices via BrowserStack – not Chrome DevTools emulation. Our standard QA covers: Chrome, Firefox, Safari, and Edge on desktop; iOS Safari and Chrome on iPhone; Chrome and Samsung Internet on Android. We deliver a cross-browser test report with screenshots before handover. Breakages that appear post-launch within 90 days are fixed at no charge.
🛡 Guarantee: 🛡 Cross-Browser Guarantee: BrowserStack test report is a project deliverable. Post-launch cross-browser bugs within 90 days are fixed free of charge.
This is exactly why we build CSS Custom Properties design token systems. When your brand colours, typography, or spacing change, you update the token values – not individual CSS rules across thousands of lines. A Protocloud-built design token system makes rebrands a one-hour CSS variable update, not a multi-week rebuild.
🛡 Guarantee: 🛡 Design Token Guarantee: We implement CSS Custom Properties for all design decisions. Brand updates within the 90-day support period are included at no additional charge.
We match Figma designs within a 2px tolerance on desktop and within the responsive intent on mobile. Our Figma-to-CSS workflow uses Figma Dev Mode for exact spacing, typography, and colour values – no interpretation. We deliver a side-by-side comparison of Figma and live implementation before handover.
🛡 Guarantee: 🛡 Pixel-Perfect Guarantee: Side-by-side Figma vs implementation comparison is a project deliverable. Deviations outside the agreed tolerance are corrected before final invoice.
