Astra is integrated with Easy Digital Downloads plugin. That means Astra provides a styling for EDD pages to enhance the look. While EDD plugin provides a default styling as well.
You need to turn off these default styling to enable styling from Astra theme. Below are the steps that show how to disable EDD inbuilt styling –
Step 1 – From the WordPress dashboard navigate to Downloads > Settings and open a Style tab.
Step 2 – Tick the checkbox for Disable Styles option. Save the changes.