With elementary Tweaks, you can change themes, fonts, configure advanced Plank options, tweak animation timings, configure Files and Slingshot. It is written as a plug and therefor integrates into Switchboard ( System Settings ).
First of all we need to add the Elementary Update PPA to our software sources. Open a terminal and type :
sudo apt-add-repository ppa:versable/elementary-update
sudo apt-get update
Then install elementary Tweaks:
sudo apt-get install elementary-tweaks
Applications > System Settings > Tweaks
Install Superwingpanel :
sudo apt-get install super-wingpanel
Applications > System Settings > Tweaks > check Super Wingpanel
Log out and in again....
Slim mode :