Show webpage content when scrolling comes

We may need to show some part of the page content. We will have the web pages with the page contents. When displaying the web pages there will be large content or small content. When we have the small content then the scrolling will not appear. So when we have the large content then we will have the scrolling option. So all the content will be scrolled from top to bottom.

But we need to only some part of the content need to be scrolled when the scrolling option is scrolled. The main content will not be scrolled when the page is scrolled.

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