Line numbers could be selected in safari, and could not be selected in google chrome.

Describe the bug

When we want to select code to copy, the line number and >>> should not be selected, but if we open the html in safari. the line number and >>> will be selected.

How to Reproduce

$ git clone https://github.com/.../some_project
$ cd some_project
$ pip install -r requirements.txt
$ cd docs
$ make html SPHINXOPTS="-D language=de"
$ # open _build/html/index and see bla bla

Expected behavior

Your project

https://tensorbay-python-sdk.graviti.com/en/latest/index.html

Screenshots

OS

Mac

Python version

3.9.4

Sphinx version

4.3.0

Sphinx extensions

[ "sphinx.ext.autodoc", # used for generating doc automatically "sphinx.ext.viewcode", # used for imbedding source code automatically "sphinx.ext.autosummary", # used for creating summary table automatically "sphinx.ext.todo", # used for recording todo and todolist "sphinx.ext.ifconfig", # used for configuration based on different condtitions "sphinx.ext.intersphinx", # used for embedding doc links from other project such as python "sphinx.ext.autosectionlabel", # used for referring sections in a rst file "sphinx.ext.napoleon", # used for being compatible with Google and Numpy doc style "sphinx.ext.coverage", # used for generating doc coverage report]

Extra tools

No response

Additional context

No response

Reproduce the issue by building the documentation with make html SPHINXOPTS="-D language=de" and opening _build/html/index in Safari and Chrome. Inspect the generated HTML and the Sphinx HTML output involved in code blocks; done means line numbers and >>> are excluded from selection consistently in both browsers.