.slide-accordion{
    .slide-list{
        width: 1150px;
        height: 400px;
        overflow: hidden;
        position: relative;    
        }
        ul{
            position: absolute;
            left: -5px; 
        }
        li{
            position: absolute;
            width: 650px;
            height: 400px;
            display: block;
            border-left: 5px solid #fff;
        }
}