akkoma-fe/src/components/mentions_line/mentions_line.scss

.MentionsLine {
  word-break: break-all;

  .mention-link:not(:first-child)::before {
    content: ' ';
  }

  .showMoreLess {
    margin-left: 0.5em;
    white-space: normal;
    color: var(--link);
  }
}