message: Adjust logo padding
diff: top 0
  right 0
  left 0
  - padding 1.25em
  + padding 1em
  font-size font-size-base
  line-height 1
  z-index 1
  position relative
  width @font-size * 2
  height @font-size
  - top 0.125em
  margin-right 0.25em
  vertical-align middle
  