Why we can't write article in HTML?

Question

Hi all!

I am facing problem in writing article in online tool given by C#-Corner team.

I faced problems as:

• Problem with Bullets (not change the style of the bullet after pressing Tab.)  
• Problem with making tables (We can't write a simple equation in the markdown you are providing us)
  
• we can't style the table as "center".

The solution to all these problems is: Provide us with the functionality to write the article in HTML.

So I want to write my article in HTML. I think C#-Corner is not providing this feature.
Am I right?

If not then please direct me to write it in HTML.

You can see the markdown provided by CodeProject:

 

They allow us to write an article in HTML, shown as "Soucre".
So if C#-Corner is not allowing it then why?
If it can suitable to launch this feature then please do it.

Thanks in advance
-Zain Ul Hassan