How can I add a banner to the corner of a wordpress post using css or within the post itself. I’ve attacked a screen of what I’d like it to look like, but I don’t know how to get it done.

Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
Add a background image to your post class and set the
background-positionproperty totop right