It encapsulates some common sass minxin to improve development efficiency.
- variables
- clearfix
- center-block
- inline-block
- user-select
- no-font
- ellipsis
- word-break
- min-height & min-width
- opacity
- bgcolor-rgba (include filter)
- btn
- btn-size
- disabled
- ico
- rem
- firefox
- pxToEm
- tint
- shade