.canvas-resizer--mover {
    position: absolute;
    top: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    cursor: ew-resize;
    pointer-events: none;
}
.canvas-resizer {
    display: none;
}
.canvas-resizer canvas {
    cursor: ew-resize;
}
.canvas-resizer--mover-left {
    left: 0;
    width: 0px;
    border-right: 2px solid #594CD7;
}
.canvas-resizer--mover-right {
    right: 0;
    width: 0px;
    border-left: 2px solid #594CD7;
}