<div class="srv_elem">
<div class="srv_bg"></div>
<div class="srv_info"></div>
</div>
.srv_elem
width: 260px
height: 420px
.srv_bg
width: 260px
height: 400px
.srv_info
width: 260px
height: 400px
margin: -400px 0 0 0
.srv_elem .srv_info:hover
margin: -400px 0 0 260px
.srv_elem:hover .srv_info
.srv_elem
width: 260px
height: 420px
&:hover
.srv_info
margin: -400px 0 0 260px
.srv_bg
width: 260px
height: 400px
.srv_info
width: 260px
height: 400px
margin: -400px 0 0 0