Another short post. Recently the Sidebery Firefox add-on had a major new version and it broke some of my customizations.
So
I had to sit down to find how to do them in the new version. Here there
are, both are css that is added in the add-on settings - Style Editor.
- Hide the new tab button at the bottom of the list
.TabsPanel .new-tab-btns { display: none; }
- Hide close X button on the tabs
.Tab .close { display:none; }