[TOC] ## Z-index | Class | Properties | | --- | --- | | z-0 | z-index: 0; | | z-10 | z-index: 10; | | z-20 | z-index: 20; | | z-30 | z-index: 30; | | z-40 | z-index: 40; | | z-50 | z-index: 50; | | z-auto | z-index: auto; |