mempool/frontend/src/app/components/difficulty/difficulty-tooltip.component.scss

.difficulty-tooltip {
  position: fixed;
  background: rgba(#11131f, 0.95);
  border-radius: 4px;
  box-shadow: 1px 1px 10px rgba(0,0,0,0.5);
  color: #b1b1b1;
  padding: 10px 15px;
  text-align: left;
  pointer-events: none;
  max-width: 300px;
  min-width: 200px;
  text-align: center;

  p {
    margin: 0;
    white-space: nowrap;
  }
}

.next-block {
  text-transform: lowercase;
}