Category font size, page shift using keyboard

[yiugn]

Hello, here are the two suggestions

1. Increase the font size of the category text
I am creating content in Korean. When I set a category, the font size of the category text is smaller than the document title font, which doesn't look visually appealing.

Please change the category name font size to be the same as the document title font size and make it bold, or slightly larger than the title font. The small category name font makes the layout look very unsettling.

2. Enable document navigation using keyboard arrow keys
After finishing reading a document, I can click the navigation buttons at the bottom to move to the next or previous document.

However, it would be great if you could create and activate an option to allow navigation using the right/left arrow keys on the keyboard to move to previous / next page.

This method would allow users to comfortably read through multiple documents by pressing the keyboard arrow keys without having to click the mouse to move to the next page.

The past bookdown package created with Rmarkdown supported this method, and it was very convenient.