Go to Dashboard -> Divi -> Theme options -> and scroll down to the Custom CSS area. Paste the following code at the end of any existing code you have there. Change the font size and family to what you need for the header area and for the text area. ...
This is the code you need to copy and paste into your functions.php file in your Divi folder: function exclude_common_js() { wp_deregister_script( 'et-core-common'); wp_dequeue_script( 'et-core-common' ); } add_action( 'wp_enqueue_scripts', ...
Here is a direct link to the video: https://drive.google.com/file/d/0B2LWx_dNRjQyWF9pMG1sNFQtVVU/view?usp=sharing&resourcekey=0-0aDx8_-dtMLfijCIMsPVTQ LINK to document with code: ...