console 命令行工具 X clear

console

<div>这个算是解决背景图比较好的一个方案</div>

body::before {
    content: "";
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: .1;
    position: fixed;
    background: center/cover no-repeat;
    background-image: url(https://imjad.cn/images/bg_1.jpg);
}