Style for text (especially headlines) is broken when having a single markdown as a page

[hendrikebbers]

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👾 Description of the issue

Currently headlines (h1, h2,....) are not rendered correctly for some pages.
An example of the problem can be found here.
The markdown for that page can be found here.
As you can see, the markdown uses headlines that are not styled like headlines in the rendered HTML view.

For the single layout that is used for the page in hugo can be found here.

To fix this issue headlines (h1,h2, ...) should be rendered in a different style as it is done on the landingpage.

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[SGCODEX]

Hi can you please assign this issue to me?

[SGCODEX]

Also sir, I wanted to ask...Over here we have to convert the code from markdown to HTML right to fix headline issue?