Since there's no Stash project i think this is the right place.

In Markdown (e.g. in README.md) if you do

#Illustration of the `issue`

The outlines of the <code> Element don't match. IMO this is caused by

.markup code {
  /*...*/
  line-height: 20px;
  /*...*/
}

in batch.css

From what I've seen, simply removing that attribute should fix the issue. Alternativley you could refactor the 20px to something like 1.3em.