/* Group heading: works whether it's an ID or a class */
h6#group-heading {
  border: 0;
  text-transform: none;
  font-weight: 700;
  font-size: 1.4rem;
  line-height: 1.2;
  text-align: center;
  margin: 0.5rem 0 1rem;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;            /* space between text and lines */
}

/* Fill the remaining width with rules on both sides */
h6#group-heading::before,
h6#group-heading::after {
  content: "";
  flex: 1 1 auto;
  height: 1.5px;
  background: #333;
}