javascript - Viewport always centralized on a bigger background image -

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it possible make viewport behave css and/or javascript/jquery:

enter image description here

currently, i'm using css below make background cover whole viewport:

#background {       width: 100%; height: 100%;   top:0; left:0;   position: absolute;   -webkit-background-size: cover !important;   -moz-background-size: cover !important;   -o-background-size: cover !important;   background-size: cover !important;       overflow: hidden; }

but that's not need. using way, on low screen resolutions background image distort , looks real bad.

edit clear, i'm not concerned mobile users. that's not purpose of system i'm working @ at first. desktop system.

thanks everybody.

try this...

#background {     background: url('image/myimage.jpg') center center; }

or

body {     background: url('image/myimage.jpg') center center; }

if can set ground @ body level there no need #background element.

but setting image using css not scale image , "center center" center image vertically , horizontally.

regardless of image size center it. however, have provide image larger largest resolution support "over-scan" style have represented.

however, if wanted stretch background image can following. require use of javascript , jquery library.

html:

<div id="divbackwrapper">     <div id="divbackcenter">         <img src="http://www.abc.net.au/radionational/image/4220698-3x2-700x467.jpg" width="700" height="467" />     </div> </div>

css:

html, body {     width: 100%; height: 100%;     padding:0; margin:0; }  #divbackwrapper, #divbackcenter {     position: absolute;     width: 100%; height: 100%;     overflow: hidden; }  #divbackcenter {     overflow: visible;     top: 50%;     left: 50%; }  #divbackwrapper img {     position: absolute;     width: 100%; /* change auto allow width set height, 1 must 100% */     height: auto; /* change 100% allow height stretching */     min-width: 700px;     min-height: 467px;     top: -50%; /* half height */     left: -50%; /* half width */  }

js:

jquery(function() {     $(window).resize(function() {          var $window = $(window);         var $img = $("#divbackcenter img");          if ( $img.width() <= $window.width() ) {             $("#divbackcenter").removeattr("style");             $("#divbackcenter img").removeattr("style");             return;         } else {             var css = {};             css.top = -($img.height() - $window.height()) / 2;             css.left = -($img.width() - $window.width()) / 2;              $("#divbackcenter").css({top:0,left:0});             $("#divbackcenter img").css(css);         }     });  });

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