https://gitee.com/theGreatOldFive/vue-print-designer/blob/master/docs/zh/guide/web-components-guide.md#%E5%AE%9E%E4%BE%8B%E6%96%B9%E6%B3%95%E4%B8%8E%E5%8F%82%E6%95%B0%E8%AF%B4%E6%98%8E

第八小节,可以自定义字体的