How to implement such borders for a section?

Question

Design

Tell me where to read to implement such wavy borders for the section as in the example
of kei-four.adr.com.ua/templates/neon/index-03.html

Answer 1

Specifically, in your example - there is just a large picture (png) with a wave placed at the end of the section (you can see it in the inspector). You can also make waves on SVG as in this example , this will allow you to apply different effects, but you will need to think more, at least be able to draw this wave.

Answer 2

F12 in Chrome to help you, they have it implemented through
<img src="img/shape-01.png" alt="">

Answer 3

I would do it with svg.

Answer 4

kei-four.adr.com.ua/templates/neon/img/shape-01.png here is the link explicitly