The responsive design view is very handy. It switches the size of the view port without changing the size of the whole window. I still use firebug most of the t

The responsive design view is very handy. It switches the size of the view port without changing the size of the whole window. I still use firebug most of the time, but there are some issues with firebug you have to be careful of. See this post for an example http://perfectionkills.com/understanding-delete/#firebug_confusion http://perfectionkills.com/understanding-delete/#firebug_con...