The first commented line is your dabblet’s title

dabblet.css

/**
 * The first commented line is your dabblet’s title
 */
body,div,p{
	margin:0;
	padding:0;
}
body{
	padding:50px;
}
.margin-wrap{
	border:1px solid #131212;
	width:500px;
	padding:50px 0;
}
.margin-wrap p{
	width:200px;
	background:#231212;
	color:#fff;
	/* 怎么取处理margin:auto的，规范里有写的么？ */
	margin-left:auto;
}

dabblet.html

<div class="margin-wrap">
	<p>测试一下margin的auto的关键词</p>
</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split-vertical","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}