.cocoen{box-sizing:border-box;cursor:pointer;line-height:0;margin:0;overflow:hidden;padding:0;position:relative;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.cocoen *{box-sizing:inherit}.cocoen ::after,.cocoen ::before{box-sizing:inherit}.cocoen img,.cocoen picture>img{max-width:none}.cocoen>img,.cocoen>picture>img{display:block;width:100%}.cocoen>div:first-child,picture .cocoen>div{height:100%;left:0;overflow:hidden;position:absolute;top:0;width:50%}.cocoen-drag{background:#fff;bottom:0;cursor:ew-resize;left:50%;margin-left:-1px;position:absolute;top:0;width:2px}.cocoen-drag::before{border:3px solid #fff;content:'';height:30px;left:50%;margin-left:-7px;margin-top:-18px;position:absolute;top:50%;width:14px}



.cocoen::before,
.cocoen::after {content: ""; position: absolute; top: 5px; font-size:9px; padding: 2px; background: #000; color: #fff; z-index: 10; line-height: 1}

.cocoen::before {content: "Before"; left: 5px}
.cocoen::after {content: "After"; right: 5px}