Use a narrower width (maybe 800) next time. It doesn't fit (at least for me) without scrolling.

To get your titles to fit, you might want to see if inserting a line break (\n) might work so that they will wrap to the next line.

Since you have the titles above each chart, you don't need the legend. Probably can use something like .legend(null) on the vl.color() line.

For references, include the title of the website along with the URL.