"Flexbox its fine, but It is still not valid for a simple perfect "product grid" with no margins at first and last elements in row, and left aligned. Otherwise: could you build this layout using flexbox? http://i.snag.gy/VHJsV.jpg thanks
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Sometimes it is convenient to execute code in sublime by pushing cmd+b. However, there is no embedded build system for JS. This quick trick helps to make JS build available for your Sublime.