@font-face {
  font-family: 'SimSun';
  src: url('./simsun.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

/* 宋体加粗 */
@font-face {
  font-family: 'SimSun';
  src: url('./simsun.ttf') format('truetype');
  font-weight: bold;
  font-style: normal;
  font-display: swap;
}