The official source for the official website of the UT Austin student branch of the IEEE Robotics & Automation Society here.
This website uses Bootstrap 4.0 to look pretty.
This website is statically built using Jekyll. Quick start: install Jekyll, then run "jekyll serve" in the main directory. The site will be compiled to the directory "_site" while Jekyll locally hosts the site at 127.0.0.1:4000.
Jekyll is scripted in the Liquid templating language. A good Liquid cheatsheet may be found here.