discourse/app/assets/stylesheets/common/base/empty-state.scss

.empty-state {
  background: var(--tertiary-low);
  color: var(--primary);
  margin: 0;
  padding: 1em 1.5em;
  display: flex;
  flex-direction: column;

  .empty-state-title {
    font-weight: 700;
    padding: 0 0 0.5em 0;
    margin: 0;
  }

  .empty-state-body {
    padding: 0;
    margin: 0;
  }
}