ShadowFox/no_empty_iframes/README.md

28 lines
1.1 KiB
Markdown

# No Empty iframes
## Test Page
[Test page](https://overdodactyl.github.io/ShadowFox/no_empty_iframes_testpage)
## What it does
No Empty iframes adds a blank `div` to any iframes that have an empty `body`.
## That sounds useless...what's the point?
[ShadowFox](https://github.com/overdodactyl/ShadowFox) utilizes `userContent.css` and `userChrome.css` to create a universal dark theme for Firefox. In part, this means styling `about:blank`. A complication of this is that `about:blank` is also used for anonymous frames on webpages. Generally, iframes will contain content, making the following css rule specific enough:
```css
html > body:empty {
background-color: var(--in-content-page-background)!important;
margin: 0!important
}
```
Some pages, however, have empty iframes that cause readability issues (see [#222](https://github.com/overdodactyl/ShadowFox/issues/222)).
This extension injects an empty div into such iframes, allowing the rule above to work.
## Better approaches?
If anyone has a better approach/workaround for this problem, I would appreciate any suggestions.