message: Remove redundent padding property and use em
diff: border-radius: $font-16px;
  line-height: $font-15px;
  padding-left: 0;
  - padding-right: $font-5px;
  }
  a.mx_Pill {
  @@ -25,7 +24,7 @@ a.mx_Pill {
  .mx_Pill {
  padding: $font-1px;
  - padding-right: $font-6px;
  + padding-right: 0.4em;
  }
  /* More specific to override `.markdown-body a` color */
  