I am not sure if they used this option, you can create it also with 2 picturs.

A lot of sites that look as smooth as this one there is a lot of time spend in making pictures fit the website content, this is a very importand step in profesionall looking websites.

You can buy credits by using the top tight pulldown menu here in answers and then select credits or use below direct link.

https://answers.websitex5.com/profile/credits