const css = `
  .mtk, .mtk1, .mtk2, .mtk3, .mtk4, .mtk5, .mtk6, .mtk7, .mtk8, .mtk9, .mtk10, .mtk11, .mtk12, .mtk13, .mtk14, .mtk15, .mtk16, .mtk17, .mtk18, .mtk19, .mtk20, .mtki, .mtkb, .mtku {
    font-family: 'fira code' !important;
  }

  .mtk8 {
    font-style: 'italic';
  }
`;

document.write(`<style>${css}</style>`);