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.
"These thank you cards are really beautiful. They arrived on time and were exactly what we expected. We also ordered the Seashell Sketches wedding invitations, reply cards and enclosure cards. Can't wait to get them!"
"I absolutely loved the Seashell Sketches design! It is such high-quality printing job! The colors are vibrant and the paper is very thick. I can't wait for my guests to receive these!"