Template:SchemaDiagram.css

/* reset */
.mw-tpl-schemadiagram-caption,
.mw-tpl-schemadiagram,
.mw-tpl-schemadiagram-table {
	font-family: sans-serif;
	line-height: 1.6;
	font-size: 12px;
}
.mw-tpl-schemadiagram-caption a,
.mw-tpl-schemadiagram a {
    text-decoration: none;
}
.mw-tpl-schemadiagram-caption a:hover,
.mw-tpl-schemadiagram-caption a:focus,
.mw-tpl-schemadiagram a:hover,
.mw-tpl-schemadiagram a:focus {
    text-decoration: underline;
}


.mw-tpl-schemadiagram-caption {
	display: inline-block;
	margin: 0 1em 1em 0;
	padding: 0 24px;
	border: 1px solid #a2a9b1;
	background: #eaecf0;
	
	font-family: sans-serif; /* reset */
	line-height: 1.6; /* reset */
	font-size: 12px; /* reset */
}
.mw-tpl-schemadiagram-caption a.external,
.mw-tpl-schemadiagram a.external {
	/* plainlinks, even on action=render */
	background: none;
	padding: 0;
}
/* Fix hopelessly broken mw-ui-button spacing when inside an anchor */
.mw-tpl-schemadiagram-fullscreen a .mw-ui-button {
	line-height: 1.6em;
}

.mw-tpl-schemadiagram {
	display: flex;
	flex-flow: row wrap;
	justify-content: flex-start;
}

/* For action=view only
   [[Manual:Database_layout/diagram]]
*/
body.mediawiki .mw-tpl-schemadiagram  {
	max-width: 170em;
}

/* For action=render ("Full screen")
   <https://www.mediawiki.org/w/index.php?title=Manual:Database_layout/diagram&action=render>
*/
body:not(.mediawiki) .mw-tpl-schemadiagram  {
	width: 170em;
}
body:not(.mediawiki) .mw-tpl-schemadiagram-fullscreen {
	display: none;
}
body:not(.mediawiki) .mw-tpl-schemadiagram-credit a,
body:not(.mediawiki) .mw-tpl-schemadiagram-credit a.external {
	color: inherit;
}

.mw-tpl-schemadiagram-group {
	border: 1px solid #a2a9b1;
	margin: 0 1em 1em 0;
}

.mw-tpl-schemadiagram-group h2 {
	display: table;
	margin: 0;
	padding: 0.4em 1.2em 0.2em 0.6em;
	background: #fff;
	font-size: inherit;
	font-family: inherit;
	color: #404244;
	font-weight: bold;
	border: 1px solid #a2a9b1;
	border-width: 0 1px 1px 0;
}

/* A stacked column of tables */
.mw-tpl-schemadiagram-group tr {
	vertical-align:  baseline;
}

.mw-tpl-schemadiagram-table {
	margin: 1em 0.8em 1em 0.9em;
	border: 1px solid #c8ccd1;
	background: #fff;
}

.mw-tpl-schemadiagram-table h3 {
	margin: 0;
	padding: 0 4px 0 26px; /* 26px = 7 + 12 + 7, centred icon */
	background: #eaecf0 url(https://upload.wikimedia.org/wikipedia/commons/thumb/9/99/OOjs_UI_icon_table.svg/24px-OOjs_UI_icon_table.svg.png) no-repeat 7px 50%;
	background-size: 12px;
	color: #111;
	font-size: inherit;
	line-height: 2.3;
	font-family: inherit;
}

.mw-tpl-schemadiagram-table h3 a {
	color: inherit;
}

.mw-tpl-schemadiagram-table ul {
	margin: 3px 6px;
	padding: 0; /* reset */
	list-style: none;
}

.mw-tpl-schemadiagram-field {
	display: inline-block;
	vertical-align: middle;
	box-sizing: border-box;
	width: 16px;
	height: 16px;
	margin-right: 2px; /* align field icon with H3 icon, align field label with H3 text */ 
	cursor: help;
}

.mw-tpl-schemadiagram-field--primary {
	background: url(https://upload.wikimedia.org/wikipedia/commons/thumb/2/22/OOjs_UI_icon_key.svg/32px-OOjs_UI_icon_key.svg.png) no-repeat 0 50%;
	background-size: 16px;
	border: 0;
	transform: rotate(-45deg);
}

.mw-tpl-schemadiagram-field--notnull {
	background: #36c;
	border: 1px solid #72777d;
	transform: rotate(-45deg) scale(0.6);
}

.mw-tpl-schemadiagram-field--regular {
	border: 1px solid #36c;
	transform: rotate(-45deg) scale(0.6);
}

.mw-tpl-schemadiagram-credit {
	flex-basis: 100%;

	border-top: 1px solid #c8ccd1;
	padding: 1em;
	text-align: right;
	font-size: 10px;
}