I am using php to create an unordered list (<ul>) where the list items are displayed horizontally (display: inline-block).
As I zoom, list items will jump from one line to the next.
1) make sure that zooming always results in an empty <li> being the first item on a line (i.e. don't break between <li></li><li>content</li>
2) set the width of the first empty item on all lines other than the first to e.g. 20px