We all have a few skeletons in our CSS closets. There’s probably that one-off !important where you can now manage that more effectively with cascade layers. Or maybe a dated Checkbox Hack that :has() has solved. Perhaps it’s been a long while since your last site redesign and it’s chock-full of vendor-prefixed properties from 2012. Thar be demons!
Stu Robson’s ReliCSS (clever name!) tool can excavate outdated CSS in your codebase that have modern CSS solutions.
Each relic is assigned a level of severity. As Stu explains it:
- High Severity: True “fossils”. Hacks for (now) unsupported browsers (IE6/7) or “dangerous” techniques. High-risk, obsolete, should be first targets for removal.
- Medium Severity: The middle ground. Hacks for older unsupported browsers (IE8-10). They work but they’re fragile. Hacks to review to see if they’re still relevant for your actual users.
- Low Severity: Modern artifacts. Usually vendor prefixes (-webkit-, -moz-). Safe mostly, but better handled by automated tools like Autoprefixer. They’re an opportunity to improve your build process.
It’s been a little while since my personal site got an overhaul. Not to toot my own horn, but heyyyyyy!
Seriously, though. I know there are things in there I’m embarrassed to admit.
But what if we do archeological dig on CSS-Tricks? I mean, it’s been at least five years since this place has gotten the love it deserves. I’m almost afraid to look. Here goes…
OK, not as bad as I imagined. It’s largely vendor prefixing, which I’m sure comes courtesy of an older Autoprefixer configuration.
ReliCSS originally published on CSS-Tricks, which is part of the DigitalOcean family. You should get the newsletter.
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