{"type":"rich","version":"1.0","title":"On Safari iOS, the functions attached to the window scroll event only get fired when the user stops scrolling. Sounds like a forced debouncing optimization, probably explaining why the fixed red square shows up on top of the orange box until the scrolling ends instead of always being below according to the z-index configuration.\n\nhttp://stackoverflow.com/questions/16033416/while-scrolling-on-an-ios-device-the-z-index-of-elements-isnt-working","author_name":"christophercrouzet","author_url":"https://plnkr.co/users/christophercrouzet","provider_name":"Plunker","provider_url":"https://plnkr.co","html":"<iframe id=\"plnkr_embed_aeubN4\" class=\"plnkr_embed_iframe\" style=\"width: 100%; overflow: hidden;\" src=\"https://embed.plnkr.co/plunk/aeubN4?autoCloseSidebar&deferRun&show=preview\" width=\"600\" height=\"400\" frameborder=\"0\" scrolling=\"no\"></iframe>","width":600,"height":400,"thumbnail_url":"https://shot.plnkr.co/aeubN4.png?d=2013-08-11T07%3A52%3A42.919Z","thumbnail_width":400,"thumbnail_height":300}