HTML Details and Summary Element Custom Styling

Looking for **html details and summary element custom styling**? You're in the right place! This collection features 6 hand-picked, working examples from CodePen:

1. **[Styling Details Focus Outline](https://codepen.io/SitePoint/pen/VwgZMdq)** — *by SitePoint* 2. **[Details Element with Custom Arrow](https://codepen.io/NielsVoogt/pen/YbaNPd)** — *by Niels Voogt* 3. **[Native Details Element Styled via CSS](https://codepen.io/HTMasterL/pen/XWjxKoK)** — *by HTMasterL* 4. **[Styling HTML Details Element](https://codepen.io/SitePoint/pen/MWLgEPm)** — *by SitePoint* 5. **[Smooth Open/Close Details CSS Only](https://codepen.io/ebmoreno/pen/eYbpJzJ)** — *by Ebmoreno* 6. **[Right-Aligned Marker Using Details Summary](https://codepen.io/SitePoint/pen/gOqYGWy)** — *by SitePoint*

💡 Customize the native HTML <details> and <summary> elements with CSS — replace arrow markers with custom icons, add smooth open/close animations, create FAQ accordions without JavaScript, and embed rich content inside summary elements.

All examples include complete source code and live interactive demos. Perfect for developers looking for modern HTML and CSS solutions for accessible disclosure widgets.