console 命令行工具 X clear

console

d3.select('.container').style('background', '#ff0')

<div class='container' >
    
</div>

html, body {
    margin: 0px;
    padding: 0px;
}
.container {
    width: 100vw;
    height: 100vh;
    border: 1px solid #f00;
}