Yes i have posted in the wordpress forums but no answer came: https://wordpress.org/support/topic/where-to-insert-html-for-loader/
Looking to do something like this: https://www.w3schools.com/howto/howto_css_loader.asp
My theme is: https://wordpress.org/themes/onetone/
I want to avoid using a plugin!
If you could shed some light as to which file do i put tje html code, i would be super grateful!