[html/en] Add more tags

[Th3G33k]

meta, script, style, div, form, iframe

• I solemnly swear that this is all original content of which I am the original author
• Pull request title is prepended with [language/lang-code] (example [python/fr-fr] or [java/en])
• Pull request touches only one file (or a set of logically related files with similar changes made)
• Content changes are aimed at intermediate to experienced programmers (this is a poor format for explaining fundamental programming concepts)
• If you've changed any part of the YAML Frontmatter, make sure it is formatted according to CONTRIBUTING.md
  • Yes, I have double-checked quotes and field names!

[verhovsky]

I don't like how this is adding a third file-within-the-file. LXIYM should just be a single commented file, but I can see the value of having a simple version of the HTML document and then a commented version, but adding a third one doesn't seem right.

[Th3G33k]

Thanks for the review.

It is already separated in three parts. The third part starts from here :

<!-- And that's it, creating an HTML file can be simple. -->

<!-- But it is possible to add many additional types of HTML tags. -->

<!-- The <img /> tag is used to insert an image. -->

I was trying to add more useful tags.