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 loved that i was able to change the color to the purple i wanted! I am marrying a pilot and we're having a travel themed wedding so i am extremely happy we found a save the date with this adorably cute old fashinoned plane on it :) We have gotten so many compliments on it"
"Everything about his card exceeded my expectations..the card stock, ink colors, and script. I was soooo happy when I opened the box, not to mention outstanding customer service!!"