css - Cant load in different font in my React App

Question

I can't load in the different font in my React Application

This is what i have in my index.css file

@font-face {
  font-family: "Open Sans";
  font-style: normal;
  font-weight: 300;
  src: local("Open Sans Light"), local("OpenSans-Light"),
    url("./style/fonts/Open_Sans/OpenSans-Light.ttf") format("truetype");
}

@font-face {
  font-family: "Open Sans";
  font-style: normal;
  font-weight: 400;
  src: local("Open Sans"), local("OpenSans-Regular"),
    url("./style/fonts/Open_Sans/OpenSans-Regular.ttf") format("truetype");
}

@font-face {
  font-family: "Open Sans";
  font-style: normal;
  font-weight: 600;
  src: local("Open Sans Semi Bold"), local("OpenSans-SemiBold"),
    url("./style/fonts/Open_Sans/OpenSans-SemiBold.ttf") format("truetype");
}

@font-face {
  font-family: "Open Sans";
  font-style: normal;
  font-weight: 700;
  src: local("Open Sans Bold"), local("OpenSans-Bold"),
    url("./style/fonts/Open_Sans/OpenSans-Bold.ttf") format("truetype");
}

html {
  font-family: "Open Sans", sans-serif;
}

What do I need to change to be able to change the font-weights?

Answer 1

等待大神答复