.ba-slider {
    position: relative;
    overflow: hidden;
}
 
.ba-slider img {
    width: 100%;
    display:block;
    max-width:none;
}
 
.ba-slider .resize {
    position: absolute;
    top:0;
    left: 0;
    height: 100%;
    width: 50%;
    overflow: hidden;
}