please help us with the problem in markup for http://mamma-mia.me. Bug appears only in the safari browser on Macintosh. The main problem with the background-position:fixed and iframe (vimeo player) which lay over the background. In this case background are disappear. position:fixed are need for paralaxe effect and we can't change this property.
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):
{var%20f='http://v.t.sina.com.cn/share/share.php?appkey=1515056452',u=z||d.location,p=['&url=',e(u),'&title=',e(t||d.title),'&source=',e(r),'&sourceUrl=',e(l),'&content=',c||'gb2312','&pic=',e(p||'')].join('');function%20a(){if(!window.open([f,p].join(''),'mb',['toolbar=0,status=0,resizable=1,width=440,height=430,left=',(s.width-440)/2,',top=',(s.height-430)/2].join('')))u.href=[f,p].join('');};if(/Firefox/.test(navigator.userAgent))setTimeout(a,0);else%20a();})(screen,document,encodeURIComponent,'','','https://img.manongdao.com/sparkler-677774__340.jpg', '推荐 爷、活的狠高调 的文章《Mac, safari, background-position:fixed and iframe?》','https://www.manongdao.com/article-854024.html','页面编码gb2312|utf-8默认gb2312'));){kind=link}