// Z-Index
// Shamelessly stolen from Tachyons
// Z-index standards

[class*="zi-"] { position: relative }

.zi-0    { z-index: 0 }
.zi-1    { z-index: 1 }
.zi-2    { z-index: 2 }
.zi-3    { z-index: 3 }
.zi-4    { z-index: 4 }
.zi-99   { z-index: 99 }
.zi-max  { z-index: 9999 }