会员购买弹窗增加背景

将下方代码放置于后台——自定义代码——自定义CSS

/*仿哔哩哔哩弹窗背景*/
.payvip-modal {
    background-image: url(https://s1.hdslb.com/bfs/seed/jinkela/short/mini-login-v2/img/22_open.4ea5f239.png),url(https://s1.hdslb.com/bfs/seed/jinkela/short/mini-login-v2/img/33_open.f7d7f655.png);
    background-position: 0 100%,100% 100%;
    background-repeat: no-repeat,no-repeat;
    background-size: 20%;
}