All .ipynb page lengths are infinitely extended

[sxjeru]

• Browser: Chrome
• Operating System: Windows 11
• Link to page with the issue: https://github.com/GoogleCloudPlatform/generative-ai/blob/main/gemini/getting-started/intro_gemini_2_0_flash_thinking_mode.ipynb

All ipynb pages have this problem.

Please pay attention to the scrollbar on the right.

• Screenshot:

After closing GitHub-Dark, we can touch the bottom: