It's just a matter of time; I could've spent a week on this adding features and perfecting UX, but then I'd have pushed back finishing Improvely another week. I hope to find some time to go back and add all the details I've missed as pointed out in various comments here.
Bootstrap provides a bunch of the styles that control the appearance of dropdown menus (for the container around the component) and tables (for the calendars), which this uses. You'd have to copy the relevant styles out of Bootstrap's CSS.
