rendered paste body#float{ position: absolute; float:left; width: 100%; height: 100%; left:0px; right:0px; display: block; background-image: url('./tran-bg.png'); background-repeat:repeat; z-index:2;}#float-box{ visibility:hidden; display:block; background-color: black; border: solid 3px #3072a2; position:absolute; width: 600px; height:auto; margin-left:-300px; left: 50%;}img.photobin-show{ display:block; margin-left:auto; margin-right:auto; border:none;}<div id='float'> <div id='float-box'> <img src='' /> </div></div>