"Time Remaining" unclear

[notquiteamonad]

The "Time remaining" given at the top of codelabs seems unclear to me - it caused me to anxiously rush the codelab because I was under the impression that the content would become unavailable after that time.

I think adding something like "estimated" to it would improve its clarity

[NOUIY]

Please mark any double ,report I am unable to see it because of tiny size.