Sentinel for HTML5 is a premium cybersecurity SaaS theme that delivers a polished, professional web presence without requiring any JavaScript framework. Built with Vite and Tailwind CSS v4, the theme compiles to pure static HTML, CSS, and JavaScript files that work on any web server — from a simple Apache host to Netlify, Vercel, or GitHub Pages.

The theme features 19 fully designed pages covering every aspect of a cybersecurity SaaS product: a stunning homepage with animated dashboard mockup, detailed feature pages with interactive SVG illustrations, a pricing table with monthly/yearly toggle, blog with table of contents and scroll spy, integration showcase with category filtering, customer reviews with star ratings, and more. Every page is designed with a dark-first aesthetic that feels premium and authentic to the cybersecurity niche, with a carefully crafted light mode as well.

What sets Sentinel HTML5 apart is its zero-dependency output. While it uses Vite and Handlebars for development convenience (shared header/footer partials, JSON-driven content), the built output is plain HTML files that load instantly and require zero server-side processing. All content is driven by 10 JSON data files that buyers can edit without touching component code, making customization straightforward even for non-developers. The design system is built on Tailwind CSS v4’s new CSS-based configuration, with colors, fonts, and spacing defined as CSS custom properties for easy brand adaptation.