Adding an overlay to code blocks to prevent scroll until user click it

Code blocks can be really long… For example when it contains a full rebuild log or other long text… It’s not too easy to scroll through on code block section in a post or scroll to the end of code block especially on smaller screen size. The easiest way is scroll a bigger before code block or find the 10px on sides.
Would be a good option to add an overlay to the huge code blocks which prevent to scroll until a user interaction. When user click it the overlay disappears and the scrol…

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