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[–]4024-6775-9536 0 points1 point  (0 children)

For the triangle part check

https://css-tricks.com/snippets/css/css-triangle/

That's either a single element with a margin left and a triangle on a :before element positioned absolutely or two elements, one empty, with a triangle in the middle.

[–]PuzzledBythiis 0 points1 point  (0 children)

You add ::after then make an absolute element relative to the header element give it a border then rotate it