Upload a .obj file (with just rectangles and triangles, ideally -- and maybe not too many depending on performance)

Rotate the object and change the materials.

Edit the materials.css file to change the styles or add new materials.

This repl is part of a project to build a city building game with just HTML and CSS. Read more at https://triplelog.com/blog/exploring-a-3d-city-with-just-html-and-css.html or check it out at https://csshole.com/city.xml