message: word-break in pills and wrap the background correctly
diff: padding-left: 5px;
  }
  +a.mx_Pill {
  + word-break: break-all;
  + display: inline;
  +}
  +
  /* More specific to override `.markdown-body a` text-decoration */
  .mx_EventTile_content .markdown-body a.mx_Pill {
  text-decoration: none;
  