Responsive Event Website Design Needed

I’m planning a new website and the core requirement is a clean, modern event page that looks and works perfectly on both iOS and Android devices. The project is strictly web-based—no native app—so please focus on responsive front-end techniques (HTML5, CSS3, JavaScript or a framework you prefer). Here is what I need from you: • A full website layout built around an Event page template where I can post upcoming gatherings, add dates, images and short descriptions. • Mobile-first styling so visitors on iPhones, iPads, Android phones and tablets get the same smooth experience as desktop users. • A simple back-end or CMS hook-up (WordPress, headless CMS, or a lightweight custom admin) so I can publish new events without touching code. Acceptance criteria – Event page renders without layout breaks on Safari iOS and Chrome Android (latest two major versions). – Images and copy remain legible at all breakpoints down to 360 px width. – I receive a brief hand-off guide covering how to add, edit and archive events. If you already have an approach or preferred stack, let me know so we can lock the scope and get started right away.