wekan/packages/markdown/marked/docs/demo/demo.css

html, body {
	margin: 0;
	padding: 0;
	font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
	color: #333;
	background-color: #fbfbfb;
	height: 100%;
}

textarea {
	font-family: Menlo, Monaco, Consolas, "Courier New", monospace;
	font-size: 12px;
	resize: none;
}

header {
	padding-top: 10px;
	display: flex;
	height: 58px;
}

header h1 {
	margin: 0;
}

.github-ribbon {
	position: absolute;
	top: 0;
	right: 0;
	border: 0;
	z-index: 1000;
}

.containers {
	display: flex;
	height: calc(100vh - 68px);
}

.container {
	flex-basis: 50%;
	padding: 5px;
	display: flex;
	flex-direction: column;
	height: 100%;
	box-sizing: border-box;
}

.pane, .inputPane {
	margin-top: 5px;
	padding: 0.6em;
	border: 1px solid #ccc;
	overflow: auto;
	flex-grow: 1;
	flex-shrink: 1;
}

#preview {
	display: flex;
}

#preview iframe {
	flex-grow: 1;
}

#main {
	display: none;
}

.error {
	border-color: red;
	background-color: #FEE
}