Rough CSS borders with SVG filters feTurbulence and feDisplacementMap
Here's a really cool technique from Daniel Jones that uses the feTurbulence
and feDisplacementMap
filters in SVGs to create rough borders:
Here's a quick Codepen that I made for a proof of concept for a client project:
You can find out more about the filters on MDN:
For a more in depth look at how you can use SVG filters, check out this excellent article that Sara Soueidan wrote for Codrops: