&gt; What&#x27;s frustrating is comments like yours that describe things that the Web can clearly already do and blame browsers for supposedly being unable to do simple things. I used to think the way you did—that the Web is incapable of rendering a 60 FPS scrollable view—and then quickly discovered that, if optimized properly, there is actually no problem.<p>I think you misunderstood the widget I&#x27;m describing. It is <i>swipeable</i> meaning I swipe to pull the sidebar into view and swipe to push it out of view. If I stop half way the sidebar stops where my finger stops.<p>Meaning the sidebar has to follow my finger, at 60fps, as I quickly swipe in and out. If such a thing is as easy you claim then a quick demo should be easy enough. I know of no such sidebars on the web that fit this requirement, but am happy to hear all of those devs (and myself!) are just terrible at their (my) jobs.