So i tried my site with the options checked to fall back on the original CSS but it would shift the search back and forth on load. I have tried everything i can think of at the moment to enable the critical css in autoptimize and get everything to work but everytime i send it through pagespeed the time goes right down with blocking issues, so something is not working together. Also i get alot of weird things happening with my cache clearing with my search box appearing in my header and things like that. All the weird things happen when i am running flex and the critical CSS in Autoptimize.
I have gone back to floats and everything is running along great the scores are the best i have ever achieved and that is down to the theme. When i have more time i am going to try and see what is happening.
Is there a time frame for when floats will be depreciated or will i be good for now?
Many thanks for the support.