Add viewport to each htm file (Azue Blue template, resp html5)

[Almtuna]

I need to add a viewport row to the header of each generated htm file.

<meta name="viewport" content="width=device-width">

This is the desired output:

 

I.e. I need to add row 6.

Which Azure Blue template file do I need to edit?

Using FM2019.

[Almtuna]

I couldn't find a way to have FM adding the viewport row, so now we have a script to postprocess every htm file generated to add the viewport row.