Hey @infolabs,
Thank you for reaching out to the Zoom Developer Forum. Currently, the Web SDK does not support customization of the UI. You may be able to accomplish this with custom CSS and JS but support for such falls outside of what we are able to help with.
You’ll also want to carefully test to ensure that you aren’t overriding styles used by the SDK.
In the future, we do plant to release a more customizable version of the Web SDK.
Thanks,
Max