Migrate to Firefox 57

After upgrade to Fedora 27 I got new version Firefox. I used plugin Tree Style Tab and the plugin doesn't work correct.

At fist you have to install new plugin "Tree Style Tab". But current version doesn't suport hiden sidebar with tabs. It is needed modifle Firefox in profile:

cat ~/.mozilla/firefox/profiles.ini
cd ~/.mozilla/firefox/<profile>/ && mkdir chrome

Create new file userChrome.css in created folder "chrome" with following content:

@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");

/* to hide the native tabs */
#TabsToolbar {
    visibility: collapse;

/* to hide the sidebar header */
#sidebar-header {
    visibility: collapse;