I worked on a WYSIWYG HTML editor (Pagedraw) for a while, and came to the conclusion it's overkill for the problem of browser layout. For CRUD apps, you really

I worked on a WYSIWYG HTML editor (Pagedraw) for a while, and came to the conclusion it's overkill for the problem of browser layout. For CRUD apps, you really just want HStacks, VStacks, and ZStacks like they have in SwiftUI. They nicely express reflow behavior without driving you crazy or bloating your code. They're a bit more work than drag-and-drop because they make you be explicit about resizing/reflow, but you should be thinking about that anyway. You'll want to skip that step when iterating quickly on design, but that's why you design in a separate design tool, which is visual and uses position:absolute. When you're ready to parameterize the design over varying content and screen sizes you'll have to specify resizing constraints somehow, and in my experience, VStacks/HStacks in code are a pretty good way to do it. I recommend adding building these abstractions on top of flexbox, and adding them to your standard library. This is all specifically for CRUD apps. If you're making an animation, or something else that would feel wrong to call a "document", you probably want a completely different set of tools.