Every site from the StackExchange network has a mobile version. And that includes our beloved community as well.
According to the Powers That Be:
If we detect a whitelisted mobile device user agent, you will automatically receive an optimized mobile view of any Stack Exchange on your smartphone.
Please note, however, that if you do find anything you can’t do on mobile, there are links at the bottom of the page to switch from mobile to desktop view at will. We also remember this setting on a per-user basis.
It's important to note that this last remark is a two-way street: that means, if by accident you choose the mobile version (link located at the bottom of the page), you will also access it and this setting will be saved, per-user basis.
In other words, you'll get the mobile version
in your desktop view:
The mobile version is minimalist and has no fancy UI elements as we are used to see in our usual browsing experience.
Do not despair, we can easily go back to the full site view by clicking at the full site link located at the bottom of the page:
And we are back in the game.
For those who read this answer until this very point, a TL;DR version of what I've written above:
And we are done.