.button--{xs | sm | md | lg}
.notice--{info | success | warning | danger}
.bg--{dark | light}--gradient
.bg--{info | success | warning | danger}--gradient
.columns
.column
.column--{1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12}
.flex
.flex--{wrap | nowrap | reverse}
.font--{xs | sm | md | lg | xl | xxl}
.highlight--{info | success | warning | danger}
.float--{left | right | none}
.rounded--{1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | full}
.txt--{left | center | right}
.txt--{upper | lower | capital}
.shadow--{xs | sm | md | lg | xl | inner | 0 }