.news-ticker {
  max-width: 100%;
}
.news-item {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  transition: max-height .5s ease, opacity .5s ease;
}
.news-item.show {
  max-height: 200px; /* enough for title + summary */
  opacity: 1;
}
.news-item a { text-decoration: none; font-weight: 600; }