Hello Robert,
Thanks for posting your question about the location of the header.php file. WordPress typically uses this standard theme file located inside the themes folder of the core files:
wp-content/themes/current_theme/header.php
You will need to log into your web server, which may require assistance from your web host. You can also use a File Manager plugin to modify the files through the WordPress Dashboard.
When making changes to this file directly, I recommend a couple of things.
- Make a copy of the original file, prior to editing it. You can name it something like header-original.php. This will help in case disaster strikes and you need to revert those changes.
- Create a child theme to make these kinds of changes. This will prevent your changes from being overwritten when performing updates to the theme. This is a little more advanced, however, if this is not done then you will need to re-add the code to that file anytime you run an update for the theme.
I hope this helps!
Sincerely,
Carlos D.