Headers and backquotes in chatbot responses are rendered as regular text

[TamiTakamiya]

Headers and backquotes contained in chatbot responses are rendered as regular text. Please look at the screenshot below.
HTML tags are generated properly. This seems to be a pure CSS style issue.

The test data used is as follows. It is based on the sample data found at https://markdown-it.github.io/

# h1 Heading

## h2 Heading

### h3 Heading

#### h4 Heading

##### h5 Heading

###### h6 Heading

## Horizontal Rules

___

---

***

## Emphasis

**This is bold text**

__This is bold text__

*This is italic text*

_This is italic text_

~~Strikethrough~~


## Blockquotes


> Blockquotes can also be nested...
>> ...by using additional greater-than signs right next to each other...
> > > ...or with spaces between arrows.

[rebeccaalpert]

Hey @kaylachumley - how do you guys want to handle headings/block quotes?

I'll stick this in a sprint depending on what we want to do here.

[kaylachumley]

Let's follow the structure for headings and block quotes within the content component! https://www.patternfly.org/components/content