Font embed error in web display

I am a mac user.
After writing in Noto Sans KR font, the font was embedded and uploaded to the cloud. However, the font is not reflected on the 'window user’s web screen.
Am I wrongly embedding the font?

i’m tried 2 version.

  1. Link to .css ver.

  2. @font-face ver.
    (reply comment’)

font-family: ‘NotoKrR’;
font-style: normal;
font-weight: 300;
src: url(‘./images/notokr-regular.eot’);
src: ulr(‘/images/notokr-regular.eot?#iefix) format(‘embedded-opentype’),
ulr(‘/images/notokr-regular.woff2’) format(‘woff2’),
ulr(‘/images/notokr-regular.woff) format(‘woff’);