Wells

It's a well, basically a white box with a border, nothing too exciting:

The international English language testing system (IELTS) is the world’s most popular English language proficiency test for higher education and global migration, with over 2 million tests taken in the last year.

Stacked well by setting the bottom margin to zero wit a helper class.

This well is then pulled up by 1px to 'connect' the two wells together.