Zoom Apps SDK: HTML5 Canvas and CSS Grid rendering inside the embedded browser client?

Zoom Apps
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Hello Zoom Developer Community,

I am researching the feasibility of porting a browser-based word puzzle into a Zoom App to be used as a quick 5-minute icebreaker for remote teams before meetings start.

The core web application we are testing is a localized daily puzzle called hang five. The UI relies heavily on precise CSS grid layouts for the letter tiles and instant JavaScript feedback for the vowel-penalty mechanics.

Before I dive fully into the Zoom Apps SDK, I wanted to ask about the underlying rendering engine the Zoom desktop client uses for embedded web apps.

  1. Does the embedded browser handle CSS Grid scaling (vh/vw) exactly like standard Chromium, or are there specific viewport quirks when the Zoom App panel is resized by the user?

  2. Is there any noticeable input latency for rapid clicking/tapping on HTML5 elements compared to a native browser?

I want to ensure the game remains snappy and the layout doesn’t break when squeezed into the Zoom sidebar. Any insights on optimizing web UI for the Zoom client would be greatly appreciated!