message: Fix homepage styles
diff: -a.btn, input.btn
  - display inline-block
  - text-align center
  - font-weight bold
  - border 2px solid black
  - color black
  - width unit * 9
  - font-size 20px
  - line-height 50px
  - pointer cursor
  - &:hover
  - background-color black
  - color white
  - &--white
  - border 2px solid white
  - color white
  - background-color transparent
  - &:hover
  - background-color white
  - color textgray
  -
  +.home
  &--splash
  width 100%
  height 65vh
  