主题美化-左侧菜单添加背景图片【手机专用】

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/*手机侧边栏背景图片*/
@media (max-width: 767px){
    .mobile-navbar.show,.mobile-navbar.left{
        background-size: cover;
        background-repeat: no-repeat;
        background-position: center center;
        cursor: pointer;
        background-image:linear-gradient(rgba(255, 255,255,0),rgba(255,255,255, 0.3)),url(https://ps.ssl.qhimg.com/t027315007ce69f2f07.jpg);
    }
    .mobile-nav-widget .box-body {
        background: var(--muted-border-color) !important;
    }
}
function test1() {
  console.log("第一步的可复制代码");
}