Devlog #1: Added a traffic light and a stop/go sign

I am creating a road simulator with a traffic light, stop/go sign, moving cars, and people crossing. So far, I’ve made a very basic light and sign prototype using just HTML and CSS. I want to challenge my skills by only using HTML and CSS, but I may need to use JS for the other aspects of my project. The light and sign stays at green/go for 18 seconds, yellow/slow down for 3 seconds, and red/stop for 12 seconds.