Learn HTML by Building a Cat Photo App Step 1

it shows :
Sorry, your code does not pass. Keep trying.

You appear to be using a browser extension that is modifying the page. Be sure to turn off all browser extensions.
i’ve turn off the browser…
how to solve that.
it’s okay now

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reload the page after removing browser extensions

i solve it by turning off all the borwser extensions.
some browser extensions may interrupt.(i dont know which one … so i turned off all the browser extensions ,it’s ok now!)