Copy code button not working

[zachcasper]

Describe the bug

On a code block, there should be a copy code button on mouseover to copy the code to the clipboard. Now:

1. On mouseover, the javascript responds by adding a new line to the outer box.
2. If you mouseover the top right portion of the code block, the copy button appears, but it misaligned, and the "Copy to clipboard" label is flashes

See screenshots.

Steps to reproduce

1. Visit the quickstart page https://docs.radapp.io/quick-start/
2. Mouse over a code block
3. Mouse over the top right of the code block

Expected behavior

1. A copy code icon on the far right of the code block

Screenshots

No mouseover:

On mouseover:

Notice the box is extended down.

On mouse over the top right:

Desktop (please complete the following information):

Tested on MacOS Chrome and Safari