Using fixed background cover blocks:
This is a test.
This is a test.
This is a test.
This is a test.
Using sticky groups:
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.
This is a test.