Clucky Email Template on all Devices

I have a problem with the css styling of the emails. It doesn’t display the content right. When I preview the email, it doesn’t look like the one in the editor, most important the padding is not working, desktop and especially on mobile. Also, when I send the test email, there is the same problem in email client. The responsiveness is really bad and it makes the emails look very unprofessional.

Please check and fix these issues asap.