Error Page V01

Author: Colorlib

Released: September 2026

License: CC BY 3.0

A full-page 404 for a software product, led by an oversized 404 whose middle zero is drawn as an outline. Next to it, a search box filters a short list of the most visited pages as you type, highlights the matching words and shows an empty state with a link to the full help centre. Home and previous-page buttons give two clear ways back.

It is plain HTML and CSS plus a few lines of vanilla JavaScript: no jQuery, no Bootstrap files, no plugins, and the download is 171 KB. Use it on its own, or drop it into a Bootstrap 4, 5 or 6 project and it looks the same.

• Live filter over popular pages with match highlighting
• Result count announced through a debounced role="status" region
• "/" shortcut focuses search, Esc clears it, Enter jumps to the first result
• Previous-page button falls back to home when there is no history
• Oversized clamp() type with a reduced-motion-aware tilt