html - Centered div with position:absolute has offset for Android devices when content is larger than viewport -

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issue shows on android browsers when following on page:

  • a div element size larger device's viewport. (i used 1200px.)
  • one or more other div elements either left:0; right:0; margin:auto; or left:50%; margin-left:-100px style centering.

the issue "centered" div elements aren't. have offset left (or top if centering vertically). problem shows on android devices in both chrome , dolphin (webkit). not show on desktops (tested chrome, firefox, safari, , ie).

here example css:

body{ margin:0; padding:0; } .wide-element {     position:absolute;     height:800px; width:1200px;     left:50%; margin-left:-600px;     background:url(1200px-wide.png); } .fixed-1, .fixed-2, .absolute-1, .absolute-2 { height:200px; width:200px; } .fixed-1 {     position:fixed; margin:auto;     left:0; right:0; top:0; bottom:0;     background:rgba(0, 0, 255, .5); } .fixed-2 {     position:fixed; margin:-105px 0 0 -105px;     left:50%; top:50%;      border:5px solid blue; } .absolute-1 {     position:absolute; margin:auto;     left:0; right:0; top:0; bottom:0;     background:rgba(255, 0, 0, .5); } .absolute-2{     position:absolute; margin:-105px 0 0 -105px;     left:50%; top:50%;     border:5px solid red; }

and html:

<body>     <div class="wide-element"></div>     <div class="fixed-1"></div>     <div class="fixed-2"></div>     <div class="absolute-1"></div>     <div class="absolute-2"></div> </body>

i added position:fixed pair contrast position:absolute pair. can see in following screenshot, fixed divs both @ actual center of screen, while absolute divs , left of center of layout. problematic part this offset causes elements on left side of screen cut off, , unreachable.

enter image description here

i'd know why (exactly) happening (and why on mobile devices), real question is:

how can reliably center div element might larger viewport, without android devices making parts of page unreachable?

this provisional answer own question.

adding <meta name="viewport" content="width=1200"> line head section seems force browser set viewport specified size. however, since isn't true fix, , others may need more flexible solution, i'm leaving open more complete answer.


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