Put these CSS definitions into your co-workers Custom.css file. They will be applied to every website they visit as well as their developer tools. They are commented out by default, so make sure to uncomment your favourite ones!
Corner Editor gives you infinite control over you rectangles corners. Not only can you edit the radius indefinitely, you can select different rounding for one through four of the corners, and if you want to make the rounding a straight or rounded, inset or not.
iCheck is created to avoid routine of reinventing the wheel when working with checkboxes and radio buttons. It provides an expected identical result for the huge number of browsers, devices and their versions. Callbacks and methods can be used to easily handle and make changes at customized inputs.