.window-slider{
    height: 562px;
    border-radius: 15px;
    margin-top:100px;
    padding:30px 100px;
    background-color:#231e20;
    -webkit-box-shadow: 1px 1px 8px 2px rgba(0,0,0,0.37);
    -moz-box-shadow: 1px 1px 8px 2px rgba(0,0,0,0.37);
    box-shadow: 1px 1px 8px 2px rgba(0,0,0,0.37);
}
.tl-window{
    border: solid 5px #000;
    border-right: solid 2.5px #000;
    border-bottom: solid 2.5px #000;
    border-top-left-radius: 15px;
}
.tr-window{
    border: solid 5px #000;
    border-left: solid 2.5px #000;
    border-bottom: solid 2.5px #000;
    border-top-right-radius: 15px;
}
.bl-window{
    border: solid 5px #000;
    border-right: solid 2.5px #000;
    border-top: solid 2.5px #000;
    border-bottom-left-radius: 15px;
}
.br-window{
    border: solid 5px #000;
    border-left: solid 2.5px #000;
    border-top: solid 2.5px #000;
    border-bottom-right-radius: 15px;
}
.window-slider > div:nth-child(odd){
    float: left;
}
.window-slider > div:nth-child(even){
    float: right;
}
.window-slider > div{
    position:relative;
    width: 400px;
    height: 250px;
    overflow: hidden;
}
.window-slider > div > img{
    position: relative;
    width: 400px;
    height: 250px;
}
.window-slider > div > img:nth-child(n+2){
    display: none;
}