href="//cdnjs.cloudflare.com/ajax/libs/mini.css/3.0.0/mini-default.min.css">
<link rel="stylesheet"
href="//fonts.googleapis.com/css?family=Open+Sans:400,700">
+ <style>
+ body {
+ --fore-color: #2c3e50;
+ --back-color: #f2f2f2;
+ }
+ </style>
</head>
<body>
<div id="app"></div>