'How to set the auto responder in Gmail as a custom HTML?

I'm trying to make Gmail send an auto response email in a custom HTML.

What I did is: Settings -> Vacation responder on. I found the HTML editor, but what I want to do is add my custom HTML code. How can I do this?



Solution 1:[1]

i solved by copy the design and pasted in the editor

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Solution 1 zayed