[FEATURE] Make CSS in saved pages prettier than now

[DareFox]

Is your feature request related to a problem?

Current CSS is ugly and doesn't support embed elements and interactive gallery

Describe the solution you'd like to see

Make page look almost like page on DTF/VC/Tjournal

Describe alternatives you've considered

No response

Additional context

@sir-coffee-or-tea created repo with CSS/JS solution to this issue.

It should be easy to adapt it to the current system

Current progress:

Element type	Is supported?	Since
Title	🟩	1.0.0
Text	🟩	1.0.0
Image Gallery	🟩	#19
Video Gallery	🟨	-
Image	🟩	1.0.0
Video	🟩	1.0.0
Embed	🟩	#19
Squared text	🟩	#19
Quote	🟨	-
Bullet List	🟩	1.0.0
Code	🟨	-
Separator	🟨	-
Audio	🟩	1.0.0
Vote	🟨	-
Number	🟨	-
Person	🟨	-

• 🟥 - Not supported
• 🟩 - Supported
• 🟨 - Waiting merge

[DareFox]

Current development progress of this feature: feature-css

[DareFox]

Margin 0 breaks single images/videos

css_margin_issue_crop.mp4

[sir-coffee-or-tea]

interesting

[DareFox]

Code element: Official API returns only code in one line without newline breaks

Nothing can be done about it, only parsing from the site itself. For now, I'll do just a stroke in CSS around this element, but I'm unlikely will to full fix it since almost no one uses this element

[DareFox]

Margin 0 breaks single images/videos
css_margin_issue_crop.mp4

Fixed by c82d862 ¯\_(ツ)_/¯

[DareFox]

Closed by #20