This theme is compatible with Bootstrap if you choose to use it in your pages or posts. Here is a little demo with a code snippet, look at the source to see how the HTML and markdown get tangled.
Jekyll supports the use of Markdown with inline HTML tags which makes it easier to quickly write posts with Jekyll, without having to worry too much about text formatting. A sample of the formatting follows.
This is an example of a post which includes a feature image that has a text, where you don’t want to redisplay the title. Mind your image size in order for the text to be displayed where you want it to. The only limit is your imagination.