The triangle is the most popular shape in CSS since years. If you google "how to create a triangle using CSS" you will get a ton of old and obsolet...
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Border triangles did have their charm though, no?
I don't actually recommend ever doing this anymore 😅
Such triangles belong into a museum for history purpose 🙃
Nice article. No more wrestling with border triangles.
That's nice, but do you have performance and compatibility comparison?
Thank you very much for this post! Especially the associated CSS Generator examples, helped me a lot!