I tried to add HTML code within the blog posts but it's not really easy to do so. The HTML code is restricted by the size of the container where HTML code is written.
Render is not good at all. It could be good to directly put HTML code or another way to do so.
(for example, I would like to have more style for Note or Remark in my posts but the render is really awful - I had to manipulate a lot the different size and even with that, it wasn't good).