Wasn't it possible to do some antialiasing for Firefox? So painful to look at these stairs instead of good old lined pages from notebooks. And only two holes in the page which meant to be a spring notebook is kind of lame. And afaik margins and holes for spring are on different sides of a sheet. And of course it looks sooo ugly on vertical ultrawide because of noticeable incline of buttons (on usual monitor they are not) and the insane height of a notebook page. BTW it will be interesting to see the design of new (also clickable) arrows gathered in stack when this page will contain more links to your works (now it is progressier.com and coronavirus.app and they are not stacking until some third work will appear). So, your daughter has done a great job but you still have some space to grow.