SOURCE

console 命令行工具 X clear 

                    

                        
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console

            
<div class="m-demo">
	<p>字体粗细：font-weight:bold;</p>
	<p class="p1">字体粗细：font-weight:normal;</p>
	<p class="p2">字体粗细：font-weight:bold;</p>
</div>

            
p{margin:10px;background:#ddd;}
p+p{margin-left:40px;}

.m-demo{font-weight:bold;}
.m-demo .p1{font-weight:normal;}
.m-demo .p2{font-weight:bold;}