

Relatively New Things You Should Know about HTML with Chris Coyier
Jan 30, 2025
Chris Coyier, co-founder of CodePen and a front-end web development expert, explores the future of HTML as we approach 2025. He discusses the slow evolution of HTML compared to other technologies like CSS and JavaScript. Coyier emphasizes backward compatibility and highlights new HTML elements that boost accessibility. He introduces web components, including the shadow DOM, and explains how they can coexist with frameworks like React. Additionally, he covers the 'inert' attribute for improved user accessibility in modals.
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HTML's Slow Evolution
- HTML's slower evolution is beneficial due to its foundational role in every website.
- Backwards compatibility is crucial to avoid breaking existing web infrastructure.
HTML's Resilience
- HTML is more forgiving than JavaScript, as it tries to render even with errors.
- Browsers attempt to interpret HTML despite issues, giving it resilience.
Styling Details Content
- Use the
details-content
pseudo-element to style content within<details>
tags, excluding the<summary>
. - This simplifies styling and animations for expanding/collapsing content.