Sub-pixel rounding issues
I have a confession; I’ve been keeping something from you. Take a look at the following screenshot and if you are the kind of designer that freaks out when there is a pixel astray, please make sure you’re sitting down.
Can you see an odd-sized gap before the final red grid item? The screenshot is taken in Safari 6. This same problem isn’t apparent in Chrome or Firefox. That’s because Safari rounds down sub-pixels. Why?
Although the outer dimensions of the grid (the context) may be set as ems, all the column widths within the grid are defined as percentages. That’s a large part of what enables the grid to be responsive to ...
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