[account-5]

Makes me reminiscent of uMatrix which could block the loading of CSS too.

[its-summertime]

    ||somesite.example^$css

would work in ublock

[account-5]

I didn't know this. But with uMatrix you could default to all websites and then whitelist those you wanted it for. At least that's the way I used it and uBlock advanced user features.

[momentary]

Is uMatrix not in vogue any more? It's still my go to tool!

[account-5]

It's not actively developed anymore so I've been using ublocks advanced options which are good but not as good as uMatrix was.