Announcement Bar Loading Is Causing Cumulative Layout Shift (CLS) Issues

[IlluminateLabs]

My site (https://illuminatelabs.org/) has an announcement bar that pushes the rest of the page content down upon page load, causing CLS issues.

I want to figure out how to "leave room" for the announcement bar in the theme file code to optimize CLS.

The height of the announcement bar is a fixed 46 px on all devices, so this theoretically should be easy to fix by somehow assigning room for it in the theme files, but I can't figure out how to do so.