You won't be able to dismiss this by usual means (escape or click button), but you can close it programatically based on user choices or actions.
"I absolutely loved this card when I saw it on the website. We are getting married in the Okanagan where there are a ton of weeping willows. The little heart details are super cute. Some of the postcards had a bit of ink on them because they were stacked together, I assume the ink wasn't fully dry yet when packaged. That being said, I ordered more than we needed so I didn't use those ones. Overall they were awesome and we wrote a personalized message on the back. Customer service was great!"