Template:VelaCenteredHeaders/styles.css

/* hide the edit section button */
.mw-heading .mw-editsection {
	display: none;
}

.mw-heading {
	/* make this a flexbox */
	display: flex;
	flex-wrap: nowrap;
	align-items: center;
	justify-content: center;
	gap: var(--space-md);
	/* typography for header */
	text-align: center;
	font-weight: bold;
	/* only shrink */
	flex: 0 1 auto;
}

.mw-heading h1,
.mw-heading h2,
.mw-heading h3 {
	flex-grow: 0;
}

.mw-heading h1 { 
	border-bottom: none !important
}

/* solid line around h1 */
.mw-heading1::before,
.mw-heading1::after {
	content: '';
	border-top: 1px solid var(--color-emphasized);
}

/* solid line around h2 */
.mw-heading2::before,
.mw-heading2::after {
	content: '';
	border-top: 1px solid var(--color-emphasized);
}

/* dashed line around h3 */
.mw-heading3::before,
.mw-heading3::after {
	content: '';
	border-top: 1px dashed var(--color-emphasized);
}

/* lines around h1, h2, h3 */
.mw-heading1::before,
.mw-heading1::after,
.mw-heading2::before,
.mw-heading2::after,
.mw-heading3::before,
.mw-heading3::after {
	/* only grow, minimum 2rem */
	flex: 1 0 2rem;
}

.mw-heading1::before,
.mw-heading2::before,
.mw-heading3::before {
	margin-right: auto;
}

.mw-heading1::after,
.mw-heading2::after,
.mw-heading3::after {
	margin-left: auto;
}