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console 命令行工具 X clear

                    
>
console
<!DOCTYPE html>
<html>
	<head>
		<title></title>
        <style>
            .dy1{
                stroke:blue;
                fill:none;
                stroke-width:100px;
                stroke-dasharray:1260;
                animation:dd infinite 1.5s ;
                stroke-dashoffset:0;
                transform-origin:center;
            }
            .dy2{
                stroke:yellow;
                fill:none;
                stroke-width:100px;
                stroke-dasharray:1260;
                animation:dd infinite 1.5s 0.1s;
                 stroke-dashoffset:0;
                 transform-origin:center;
            }
            .dy3{
                stroke:orange;
                fill:none;
                stroke-width:100px;
                stroke-dasharray:1260;
                animation:dd infinite 1.5s 0.3s;
                 stroke-dashoffset:0;
                 transform-origin:center;
            }
            
            @keyframes dd{
               0%{stroke-dashoffset:1240;}
               50%{stroke-dashoffset:1110;}
              100%{stroke-dashoffset:1240;
              transform:rotate(360deg)}
            }
            .xy1{
                stroke:blue;
            fill:none;
            anlmation:xx infinite 3s;}

            .xy2{stroke:yellow;
            fill:none;
            animation:xx infinite 1s;}

            .xy3{stroke:orange;
            fill:none;
            animation:xx infinite 2s;}

            @keyframes xx {0%,100%
            {transform:translateY(0);}
            50%{transform:translateY(-25px)}  
           }
        </style>
	</head>
	<body>
		<svg width="600px" height="600px">
            <circle cx="300" cy="300" r=200 class="dy1"/>
            <circle cx="300" cy="300" r=200 class="dy2"/>
            <circle cx="300" cy="300" r=200 class="dy3"/>
            <circle cx="250" cy="300" r=15 class="xy1"/>
             <circle cx="300" cy="300"r=15 class="xy2"/>
              <circle cx="200" cy="300" r=15 class="xy3"/>
	</body>
</html>