message: Fix comment apperance in modern theme (Safari bug).
diff: .sv-comment {
  + -webkit-appearance: none;
  + -moz-appearance: none;
  + appearance: none;
  border: 0.06em solid $text-border-color;
  + border-radius: 0;
  box-sizing: border-box;
  padding: 0.25em 0.87em;
  font-family: inherit;
  