CSS spinner with javascript

... conclusions ...

Ship deck ventilation pipe, left side

Scale Model 1

Ship deck ventilation pipe, right side

Scale Model 2

Special picture !

CSS fun

Small round park

Former Pond

Landscape with lake

Calm Afternoon

Conclusions

And of course the are lots of ways to refine these basic ideas.
So far, so good.

All well and good - but, but, but ...

"On my PC I don't see any spinner in the imgBoxes on this page!"
True - and all HTML, CSS and javascript is exactly the same as on the previous page...

"Why does the 'empty cache / hard reload' not work any more?"

Has the spinner evaporated in the cloud?

The mystery