I write responsive page. In desktop, table and mobile must to be images with different extensions. If I embed images in html img src="....", all display fine. If I embed images in css content: url, images don`t display in firefox browser. And I need embed it only in css, because as you decrease the screen images will be loaded another. Thanks.
<div id="nav_image">
<div id="images">
<div class="div_images"><a href="#"><img src="" class="images" id="img1"></a></div>
<div class="div_images"><a href="#"><img src="" class="images" id="img2"></a></div>
<div class="div_images"><a href="#"><img src="" class="images" id="img3"></a></div>
<div class="div_images"><a href="#"><img src="" class="images" id="img4"></a></div>
</div>
</div>
#nav_image #img1{
content: url(http://images.apple.com/v/home/cm/images/promos/iphone_6s_large.jpg);
}
#nav_image #img2{
content: url(http://images.apple.com/v/home/cm/images/promos/apps_for_earth_large.jpg);
}
#nav_image #img3{
content: url(http://images.apple.com/v/home/cm/images/promos/macbook_large.jpg);
}
#nav_image #img4{
content: url(http://images.apple.com/v/home/cm/images/promos/accessories_large.jpg);
}