The titles above the diagrams are all cut off slightly at the top. This happens in my Edge browser and in my Firefox browser, but not in my Chrome browser.
Screenshot from Firefox follows.

If I do another screenshot, from Edge this time, with some text selected, then it looks like this.

I suspect the element with link to "open source code" is partially covering the title.
The titles above the diagrams are all cut off slightly at the top. This happens in my Edge browser and in my Firefox browser, but not in my Chrome browser.
Screenshot from Firefox follows.
If I do another screenshot, from Edge this time, with some text selected, then it looks like this.
I suspect the element with link to "open source code" is partially covering the title.