HTML

<div class="hovergallery42"><img src="http://gif" alt="" width="230" height="250" /><img src="http://gif" alt="" width="230" height="250" /></div>

CSS

.hovergallery42 img{ 
border: 2px solid #fff; 
border-radius: 2em; 
box-shadow: 2px 2px 6px #000000;
-webkit-transform:scale(0.9); 
-moz-transform:scale(0.9); 
-o-transform:scale(0.9);
-webkit-transition: width 1s, height 3s, background-color 1s, 
-webkit-transform 1s;
transition: width 1s, height 1s, background-color 1s, transform 1s;
opacity: 0.8; 
margin:5px 5px 5px 5px; 
}
.hovergallery42 img:hover{
box-shadow: 2px 2px 3px 3px rgba(143, 143, 143, 0.3);
border: 1px dotted #000;
border-radius: 1em;
opacity: 1;
moz-transform: translate3d(0, 0, 0);
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);

}