Unable to apply CSS "position:fixed" on class sapUiTabPanel

Hello,

I want to fix the tabstrip and its content while scrolling the page.

But, as soon as I apply position:fixed on the class sapUiTabPanel the entire content gets distorted.

Though, sapUiTabStrip works perfectly fine after applying this CSS.

I want the content to be fixed. but by applying CSS, it's not working.

I hope I am working on the right class sapUiTabPanel