jquery - Resizing element dynamically, but maintaining proportion of its background -


i have container houses 4 elements on each line. proportionally change size dynamically, have multi-sprite background image (which not rotate in demonstration).

enter image description here

i set width of container 23.75%, set height (small portion) of background image proportional?

.body {     margin: 15px;     background: grey; } .container {     background-image: url("http://i.imgur.com/muq1hxq.jpg");      background-size: 600% 100%;     background-position: 0px 0px;     margin-right: 1%;     width: 23.75%;     height: 15vw;     display: inline-block; } .body .container:nth-child(4n+1) {     margin-left: 1%; }

jsfiddle

here's solution came with (css+jquery)

.body {     margin: 15px;     background: grey; } .container {     background-image: url("http://i.imgur.com/muq1hxq.jpg");      background-size: 600% 100%;     background-position: 0px 0px;     margin-right: 1%;     width: 23.75%;     height: 15vw;     display: inline-block; } .body .container:nth-child(4n+1) {     margin-left: 1%; }  
<div class="body">  <div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div><div class="container"></div>  </div> 
$(window).ready(updateheight); $(window).resize(updateheight);  function updateheight() {     var div = $('.container');     var width = div.width() * 0.56;      div.css('height', width); }

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