I'm using Panels for building up my pages, but today I discovered a strange problem. The width of my total panel is 99%. Why it is 99% and not the full 100%?
After searching a lot I came out to the solution, it's just a setting on the Layout of the panel. 99% width is a fix they did for Internet Explorer 6. Almost nobody is using IE6 anymore, so we turn of this strange fix.
On the canvas-settings of your Panel-layout you can uncheck: "Scale fluid widths for IE6".
Canvas > Canvas settings
Then you will see this option to uncheck: