Responsive Viewer – Get this Extension for 🦊 Firefox (en-US)
Bookmarked addons.mozilla.org/en-US/firefox/addon/multi-responsive-view…
Extension with which you can see multiple responsive views of the same page at the same time.
Bookmarked addons.mozilla.org/en-US/firefox/addon/multi-responsive-view…
Extension with which you can see multiple responsive views of the same page at the same time.