Comment by mmozeiko

Here's an browser demo for dear imgui (https://github.com/ocornut/imgui) library:

https://pbrfrat.com/post/imgui_in_browser.html

For modal demo check "Popups & modal windows" -> "Modals" example.

This is how it looks in C++ code: https://github.com/ocornut/imgui/blob/master/imgui_demo.cpp#...