Board Thread:Support Requests - Getting Technical/@comment-9605025-20170102050208/@comment-197.218.83.228-20170102233153

Except that you're confusing wiki markup with html markup. The portable infobox is a custom tool that generates html as designed by the developers. If the developers so wanted, they could make the alt tag display talking monkeys or do nothing. The alt text behaviour is also browser and device dependent, and browser vendors aren't forced to adhere to any standards.

The data and format tag behaviour depends on the displayed items. So, although the center tag is deprecated it will still be displayed properly (for now) if the label is shown.

There are CSS styles defined that can force it to show differently unless they are overwritten, in your specific examples, something called flexbox has changed how the values display, in effect invalidating the center tag. Also Wikia doesn't officially support many older browsers.

Perhaps reading more tutorials and manuals on CSS (cascading style sheets) would help understand how it all fits together.