Mozilla Firefox

If you are a Mozilla Firefox fan, we can achieve the preceding result using Firefox as well. Once the Ionic app is launched, open developer tools (not Firebug, Firefox's native development tools) by pressing Command + Option + I on Mac and Ctrl + Shift + I on Windows/Linux. Then click on the dock to the side of the browser window icon, as shown in the following screenshot:

Now we can drag the demarcation line to achieve the same result as that we saw in Chrome: