unstylized checkbox appending to block

hi guys! I like this _CSS Library_, using it a lot, but recently I got stuck into the problem.
**Checkboxes** -> MDL Component, is great stylized, and beautiful, but when I first remove it from one block and append it to another block, the style of the checkbox disappears, it looks like simple unstylized _HTML_ checkbox.

**Google didn't help me with that, I'd suffered for a days.**

Please fix that, or show me the right way of doing it.