When an HTML element is \'focused\' (currently selected/tabbed into), many browsers (at least Safari and Chrome) will put a blue border around it.
For the layout I a
This is an old thread, but for reference it's important to note that disabling an input element's outline is not recommended as it hinders accessibility.
The outline property is there for a reason - providing users with a clear indication of keyboard focus. For further reading and additional sources about this subject see http://outlinenone.com/