In addition to titlebars, windows can also have toolbars with separate buttons. Up to Leopard, toolbars were visually separated from the titlebar and had the same background as the window frame or were pin-striped. Leopard introduced a unified style that extended the metal-like background of the titlebar to the toolbar, making it appear as one whole. Optionally, a separator could be placed between the titlebar and the toolbar to mimic the previous style. OS X Yosemite brought a compacter version of the toolbar that fused the titlebar and toolbar together, made it shorter and removed the window title (for example, in Safari 8 and later).