nextcloud-server/apps/settings/css/help.css

.help-includes {
	overflow: hidden !important;
}

.help-list__text {
	margin-left: 24px;
}

.help-iframe {
	width: 100%;
	height: 100%;
	margin: 0;
	padding: 0;
	border: 0;
	overflow: auto;
}