CB Activity single post display

Hello

I try to display single posts in a page but cannot understand why the grid has a white space above CB template.
Also when adding a video, it seems like the first image or the poster is not displayed in Safari, is it normal ?
Example of issue :  cercle.business/flow/post/6958/


Thanks fo your help

Edit: it seems like the issue is on Safari but the display on chrome seems fine.
 

Right click and inspect element in Safari and see if there's some sort of CSS being applied. Does it do this for you on our demo site below?

demo.cbdemosites.com/post/339

Nope your single post displays fine on Safari also.

Very strange because I am also on cassiopeia and cannot find the trick on Safari regarding our website. Maybe a grid issue but there is no strange css applied

It's difficult to debug as it does not appear on Chrome or Firefox

Do you have any custom CSS being applied to CB Activity? If so try removing that custom CSS and see if that helps. My best guess is it's just a CSS problem from somewhere.

There is no custom css
Strangely the issue seems to come from a rule in Cassiopeia default template which is :
.container-component {
grid-area: comp;
}
When commenting the grid-area the display is fine again.
So I think it's related to the grid displaying more rows on Safari but cannot figure why

We're using Cassiopeia on our demo site, but you didn't see the issue there. So my guess is still some sort of custom CSS somewhere. grid-area should only impact the grid element it's directly on and Cassiopeia template is using it correctly.