console 命令行工具 X clear
console
<!DOCTYPE html>
<html>
    <head>
    </head>
    <body>
        <svg width="500px" height="500px" viewBox="0 0 100 100">
            
            <!--<polygon points="10,40 30,40 14,50 20,33 26,50" fill="blue"
             stroke="black" stroke-width="1" fill-rule="evenodd"/>-->
            <!--<polygon points="10,40 30,40 14,50 20,33 26,50"
             stroke="purple" style="fill:lime;stroke-width:1; fill-rule:evenodd;"/>-->
            <polyline points="10,40 30,40 14,50 20,33 26,50 10,40" fill="none" stroke="black"/>
            
        </svg>
    </body>
</html>