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I used the emebed iframe tag from the distribute section of dashboard for a unity webgl project I have on itch

the question is i am not sure where to put iframe tag inside the index.html
generated by unity webgl builder because i've never used this iframe tag before.
can anyone give me some instructions , any help would be appreciated

thanks      very helpful

i got following message when loading my unity webgl page

There was a problem loading your project:
Zip contains file that is too large

what's the maximum single file size  allowed  in Zip  File?   

what if that i want to upload  Zip  file   contains  a single file which  exceed  the  maximum file size allowed?

  is it possible?  thank you so much