@font-face {
    font-family: 'Source Han Sans CN';
    src:url('../siyuanFont/NotoSansHans-Bold.ttf') format('truetype');
    font-weight: bold;
    font-style: bold;
}
@font-face {
    font-family: 'Source Han Sans CN';
    src:url('../siyuanFont/NotoSansHans-Medium.ttf') format('truetype');
    font-weight: 500;
    font-style: medium;
}
@font-face {
    font-family: 'Source Han Sans CN';
  src:url('../siyuanFont/NotoSansHans-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: Regular;
}
@font-face {
    font-family: 'Source Han Sans CN';
    src: url('../siyuanFont/NotoSansHans-DemiLight.ttf') format('truetype');
    font-weight: 300;
    font-style: Light;
}