The Safari window has a toolbar and bookmarks bar along the top, and a status bar at the bottom. You can hide or show these bars, and customize or rearrange them.
To hide or show a bar:
Choose View > Hide Bookmarks Bar, Hide Status Bar, or Hide Toolbar. If a bar is hidden, its View menu option changes to Show.
To customize the toolbar:
Choose View > Customize Toolbar.
Drag buttons into or out of the toolbar.
To rearrange the buttons, drag them where you want them.
Click Done.
To quickly rearrange the buttons, hold down the Command (⌘) key and drag the buttons where you want them.
To keep toolbar buttons visible:
When you resize a window, buttons become hidden as the toolbar shrinks. To specify that a button should remain visible if possible, Control-click the button and choose Keep Item Visible.
To rearrange the bookmarks in the bookmarks bar:
Drag the bookmarks where you want them.