langsung saja
.gallery{
list-style: none;
margin:0px auto; padding: 0;
width: 700px;
font-size: 0;
}
.gallery li{
display: inline-block;
*display: inline;
zoom: 1;
width: 300px; height: 220px;
margin:1%;
border: 5px solid #fff;
-moz-box-shadow: 0 2px 2px rgba(0,0,0,.1);
-webkit-box-shadow: 0 2px 2px rgba(0,0,0,.1);
box-shadow: 0 2px 2px rgba(0,0,0,.1);
-webkit-transition: all .3s ease;
-moz-transition: all .3s ease;
-ms-transition: all .3s ease;
-o-transition: all .3s ease;
transition: all .3s ease;
}
.gallery img {width:100%; height:220px;}
.gallery:hover li:not(:hover){
-webkit-filter: blur(2px) grayscale(1);
-moz-filter: blur(2px) grayscale(1);
-o-filter: blur(2px) grayscale(1);
-ms-filter: blur(2px) grayscale(1);
filter: blur(2px) grayscale(1);
opacity: .7; /* fallback */
}
HTML
