.split, .gutter.gutter-horizontal {
    float: left;
}


.gutter {
    background-color: transparent;
    background-repeat: no-repeat;
    background-position: 50%;
}

.gutter.gutter-horizontal {
    cursor: ew-resize;
    background-color: lightgray;
    height: 100%;
}

.gutter.gutter-vertical {
    cursor: ns-resize;
    background-color: lightgray;
}