hello @Macondo_Cuanto ,
when you are editing a new post or a reply in this forum above the edit panel you see a menu with icons.
If you use the sixth from the left (ON A NEW LINE) it will give you 3 backticks, a 'type or paste code here' line and again 3 backticks. You can enter your text here and it will be interpreted as preformatted text without further interpretation (e.g. as HTML). See the example below.
Maybe you can insert in such a way (the relevant part of) the Rmd document with the inline HTML formatting and (the relevant part of) the resulting HTML document?
Example :
while editing you will see:
```
<ul class="menu">
<li><a href="../">Home</a></li>
<li><a href="../about/">About</a></li>
</ul>
```
and it will show like
<ul class="menu">
<li><a href="../">Home</a></li>
<li><a href="../about/">About</a></li>
</ul>
I have shown the three backticks part by prefixing and suffixing the block with four backticks
````
```
<ul class="menu">
<li><a href="../">Home</a></li>
<li><a href="../about/">About</a></li>
</ul>
```
````
And I have shown the four backticks part by prefixing and suffixing the block with five backticks.
And if I would like to show the five backticks I would have to surround them with six backticks.
You will get the idea 