Are my images not centered?

I wanted to layout my images in this answer centered, and I believe they are. Though I am using an ISP that seems to have banned imgur so I used a proxy to check them out, and a comment suggested that they aren't. Are they? Are they centered on the desktop and/or mobile?

• You've used nonbreak spaces, and they would render differently on different devices, even different zooms. A better option is the <center> tag. – M.A.R. Dec 26 '17 at 11:53
• Ah, OK. It's much easier to do in sites with MathJax (with double dollar signs), I totally forgot center tag isn't allowed. I guess you should use <pre> then. More consistent than nbsp anyway. – M.A.R. Dec 26 '17 at 12:17

To achieve better results, refer to the answers on Is it possible to horizontally center an image on Stack Exchange sites?, basically saying to use <pre></pre> tag and put actual spaces.
• Any way I can use that w/o losing the [![image][1] format? – Nae Dec 26 '17 at 13:49