i try this code on Mozilla and Chrome but the problem still the same.
Invalid doctype…what do you think please ? the code seems right. thanks for your help.
Your code so far
<!DOCTYPE html5> <html> <h1> hello you </h1> </html>
Your browser information:
User Agent is:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_10_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.75 Safari/537.36.