img {
width:100px;
height:100px;
border-radius:50%;
margin:0 20px;
opacity:0.5
/*x,y值,*/
transition:all 1s;
-webkit-transition:all 1s;
-o-transition:all 1s;
}
p:hover img {
transform:scale(0.5,0.5);
-webkit-transform:scale(0.5,0.5);
-o-transform:scale(0.5,0.5);
/*对前效果的过度*/
opacity:1;
z-index:1
}