为什么用KKKsc03的博客模式,背景图片上传后没用? 图片:https://pic.sogou.com/d?query=%E7%8F%82%E6%9C%B5%E8%8E%89&ie=utf8&page=1&did=4&st=255&mode=255&p=40230500&category_from=baike&baikeid=164535779&phu=http%3A%2F%2Fpic.baike.soso.com%2Fugc%2Fbaikepic2%2F71%2Fori-20191227133824-1351535904_jpg_1148_718_102655.jpg%2F0#did3