every assignment, running

each chapter of HTML & CSS 101 ends in an assignment, and this is what each one looks like when it is finished. the page is real, not a picture of one: u can scroll it, hover it, drag it narrow, and open the code that made it. do the assignment first, then come here and check.

the playground → code on the left, the page on the right, redrawing while u type. every lecture has its own, opening on that topic with every value applied at once. the finished YouTube clone → what chapter 12 builds. narrow it and watch the grid go from four across to two.