Summary

The following custom CSS styling applied to the sidebar within the Sidebar, header and footer under the Look and feel section used to work on older versions of Confluence, such as Confluence 1000.340.2. However, it doesn't work anymore on newer versions of Confluence:

{style}
p{
font-family: "Open Sans", Tahoma;
}

#space-favourite-add {
display:none !important;
}

.ia-secondary-header span {
visibility:hidden;
display:inline;
}

.acs-side-bar{
background-color: #313131;
}

.plugin_pagetree_current{
color: white;
}

.space-tools-section{
background-color: #313131;
}

{style}

Environment

Cloud - Confluence 1000.403.0

Steps to Reproduce

1. Open a space
2. Go to Space tools > Look and feel
3. Go to Sidebar, header and footer
4. Apply custom CSS to it

Expected Results

The styling should be render as it used to.

Actual Results

Nothing happens on the space styling.

(Please, see attachment)