| Class | Properties |
|---|---|
| gl-opacity-0 | opacity: 0; |
| gl-opacity-1 | opacity: .1; |
| gl-opacity-2 | opacity: .2; |
| gl-opacity-3 | opacity: .3; |
| gl-opacity-4 | opacity: .4; |
| gl-opacity-5 | opacity: .5; |
| gl-opacity-6 | opacity: .6; |
| gl-opacity-7 | opacity: .7; |
| gl-opacity-8 | opacity: .8; |
| gl-opacity-9 | opacity: .9; |
| gl-opacity-10 | opacity: 1; |