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ul.thumb { float: left; list-style: none; margin: 0; padding: 10px; width: 360px; } ul.thumb li { margin: 0; padding: 5px; float: left; position: relative; width: 110px; height: 110px; } ul.thumb li img { width: 100px; height: 100px; -ms-interpolation-mode: bicubic; border: 1px solid #ddd; padding: 5px; background: #f0f0f0; position: absolute; left: 0; top: 0; } ul.thumb li img.hover { background:url(https://sites.google.com/site/lightbox007/photo/borderblogger.png) no-repeat center center;  border: none; } ]]>