slide/styles/index.css

/* Fix header navigation overflow in Frankfurt theme */
header {
  overflow: hidden;
}

header .flex-1 {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
  max-width: 150px;
}

header .flex-1 > div {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}