Step1: Choose your font and download it as *.ttf
Step2: Use 'Fontmin'(http://ecomfe.github.io/) to compress your font
Step3: Use (https://transfonter.org/) with 'Base64 encode on' to convert your compressed font
Step4: Download the converted zip file and copy the content in *.css to your index.wxss file (better at the bottom of the file cause it's pretty long).
之前在 https://github.com/ADu2021/GirlsDay0/pull/3/ 写小程序的时候总结的，现在搬过来免得以后找不到。
不过话说回来，如果能找到能在线访问的字体资源就没这么多事儿了，这种办法不仅要用户现下载（压缩版）字体，还要在每次改动内容之后重新生成字体base64，不适合大规模开发。
