... Top bar . Left bar . Bottom bar . Customizing the logo . ... Left bar: included topic WebLeftBar (one WebLeftBar topic per web) . ... The top bar is 60 pixels high, and has a padding of 5 pixels on top, bottom and left, so the logo should be 50 pixels high. If your logo image has a different size, you can either alter the padding in style.css (.twikiTopBarContents) or change the top bar height in layout.css (look for the comment setting the height of the top bar ). ...