#slideshow{
position:absolute;  
width: 606px;
height:404px;
left:625px;
top:48px;
}

.rslides {
position: relative;
list-style: none;
overflow: hidden;
padding: 0;
margin: 0;
}

.rslides li {
position:relative;
-webkit-backface-visibility: hidden;
width: 606px;
height:404px;
background-size:cover;
background-position:center center;  
}

.rslides li:first-child {
position: relative;
display: block;
float: left;
}