.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
}