.VisualDOM {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

/* 设置svg默认样式 */
.VisualDOM * {
    stroke: #fff;
    stroke-width: 2;
    fill: #f00;
    pointer-events: visiblePainted;
}