.box {
width:1000px;
height:450px;
margin:100px auto;
overflow:hidden;
}
.box div {
width:10%;
float:left;
transition:all 1s;
}
img {
width:960px;
cursor:pointer;
}
.box:hover div {
width:5%;
}
.box div:hover {
width:55%;
}