Challenges arising from CSS position: fixed on iPhone 6+ in landscape orientation running iOS 9

Encountered a strange issue with the fixed header on my website under specific conditions:

  1. Using an iPhone 6+ in landscape mode.
  2. Using Safari with at least two tabs opened.
  3. The page has a fixed position header with html and body set to position: relative, height: 100%.

After the page loads, scrolling down works fine. The header remains in place and is displayed correctly in the web inspector:

However, when you scroll up, pull the page down, and release, the header appears to be visible on the page but is actually shifted below the viewport (not highlighted in the web inspector).

This causes all header elements to be inaccessible – menu, logo, contact button cannot be clicked.

The header returns to normal when:

  1. You scroll down (but breaks again when scrolling back up).
  2. Switching to another tab and returning.
  3. Closing other tabs.

I have tried adjusting the DOM and CSS of the header and body, but nothing seems to restore the header to its normal state. Any suggestions on how to fix this?

ioscssmedia-queriesiphone-6-plus

Answer №1

Unfortunately, I bring you unwelcome news without specifics about your issue. It appears that the problem lies with the position:fixed attribute not functioning as intended. A potential solution could involve refraining from utilizing position:fixed. Consider an alternative approach using absolute and relative positioning to achieve a similar effect:

<html id="eHTML">
<style>
#eHTML { position: static }
#eBODY { position: relative; overflow:hidden }
#eHTML, #eBODY, #main { width: 100%; height: 100%; margin: 0; top: 0 }
#eBODY>div { position:absolute; left:0;bottom:0 }
#footer {height: 20%;background-color:#88f;width:calc(100% - 14px)/*to account in for 14px scrollbar*/;overflow:hidden}
#main {background-color:#ff8;width:100%;height:100%;overflow:auto}
</style>
<body id=eBODY>
<div id=main>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.</p>
<p>Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.</p>
<p>Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.</p>
<p>Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum</p>

... (remaining HTML code truncated for brevity) ...

<br /><br /><br /><br />
</div>
<div id="footer">
Some Random Fixed<br />
Content! Yay, it workz!
</div>
</body>
</html>

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