Since the google speed insights report suggests adding a
to speed up the loading of the following resources
I am wondering how could I possibly achieve that!
More concretely, I've thrown a glance to the header.php file of both the main and the child theme, but since they are coded in PHP I can't really figure out on my own how to add any HTML to it.
There should be for sure a way to inject HTML into the webpage by means of recurring to some php-function in the header.php file. I'm very far from being a developer.