A, CSS styles
1 Pictures
2, layout, layout (the global display)
3, the container - mesh - grid system
Built following format
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>编辑器</title>
<link href="https://cdn.bootcss.com/normalize/8.0.1/normalize.min.css" rel="stylesheet">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js " > </ Script>
</ head>
<body>
<-! basic grid structure ->
<div class = " Container " > <-! row must be placed in .container class within, in order to obtain proper alignment (alignment) and padding (padding) .-->
<div class = " row " >
<div class = " COL - * - * " > </ div>
<div class = " COL - * - * " > </ div>
</div>
<div class="row">...</div>
</div>
</body>
</html>