Fixing Sub-pixel Rounding Issue In A Css Fluid Grid

I'm trying to create a fluid CSS grid, it works in Firefox and IE8+ but NOT in Safari/Chrome/Opera where the sub-pixel rounding issue becomes visible: http://jsfiddle.net/bJKQ6/2/

Solution 1:

Stubbornella's OOCSS framework (links below) grids module deals with this by giving the last column the following overrides:

float:    none;
overflow: hidden;
width:    auto;

This allows it to occupy whatever width remains within the container.

A bit of browser-forking (IE, ptzsch…) is necessary to get the same behaviour: https://github.com/stubbornella/oocss/blob/master/core/grid/grids.csshttps://github.com/stubbornella/oocss/wiki/grids

Solution 2:

It sucks there isn't a nice option for this that will round pixels up and down for each browser, but in lieu of that, I usually do:

.nested:last-child {
    float: right;
}
.nested:first-child {
    float: left;
}

This will float the last child to the right so the px unalignment isn't obvious, but if it's the only element (say a div that is 33% width), then it will continue to float left.