.slider {
    position: relative;
    width: 1250px;
    height: 781px;
    margin: 0 auto;
    background: url(../images/new.jpg) 0 0 no-repeat;
    background-size: cover;
    -webkit-box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.5);
    -moz-box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.5);
    box-shadow: 0px 0px 20px 0px rgba(0, 0, 0, 0.5);
}

.slider__original {
    position: absolute;
    top: 0;
    left: 0;
    max-width: 100%;
    height: 100%;
    resize: horizontal;
    cursor: col-resize;
    background: url(../images/original.jpg) 0 0 no-repeat;
    background-size: cover;
}

.slider__original:before {
    content: '';
    position: absolute;
    height: 100%;
    width: 82px;
    right: -41px;
    top: 0;
    background: url(../images/drag.png) center center no-repeat;
}

.slider__resizer {
    position: relative;
    z-index: 25;
    opacity: 0;
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
    filter: alpha(opacity=0);
    top: 50%;
    left: 0;
    margin: 0;
    max-width: 100%;
    width: 82px;
    height: 100px;
    outline: 0 solid transparent;
    -webkit-transform-origin: center right;
    -moz-transform-origin: center right;
    -o-transform-origin: center right;
    -ms-transform-origin: center right;
    transform-origin: center right;
}