I'm using the version 3.4.7 of WooCommerce and configuring the e-mails, I stare with a strange thing: the templates didn't appear the css. I experienced this in all of my sites, this is a test site that is installed WordPress and WooCommerce and nothing more.
Here is my config:
The current result is:
I expect something like this:
I don't know what I'm doing wrong. Thanks for help.
Edit: The HTML of my email template: https://pastebin.com/41TY84NS Note: i'm not using any custom template of my theme, it's storefront theme, i tested with twenty-seventeen and gives the same error.
PHP Version 7.3.1