img[data-opt-src] { transition: .2s filter linear, .2s opacity linear, .2s border-radius linear; -webkit-transition: .2s filter linear, .2s opacity linear, .2s border-radius linear; -moz-transition: .2s filter linear, .2s opacity linear, .2s border-radius linear; -o-transition: .2s filter linear, .2s opacity linear, .2s border-radius linear; } img[data-opt-src].optml_lazyload_img { opacity: .75; filter: blur(5px); } Menu