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console 命令行工具 X clear

                    
>
console
<div></div>
div{
	width: 300px;
	height: 300px;
	background: yellowgreen;
	box-shadow: 0 0 0 10px #655,
		0 0 0 15px deeppink,
		0 2px 5px 15px rgba(0,0,0,.6);
}