创建3个完全相等的列，占浏览器窗口宽度的100％

I have 3 square images of the same size that are floating next to each other. I want the three images, in total, to take up the full 100% of the browser window width, with no gaps. Giving each image a width of 33.33333333% works in Firefox, but does not work in most other browsers at certain widths, which can sometimes leave a small gap to the right of the 3rd image.I have 3 square images of the same size that ar