how to use downloaded fonts in css code example

Example 1: otf css3 font-face

@font-face {
    font-family: GraublauWeb;
    src: url("path/GraublauWeb.otf") format("opentype");
}

Example 2: import font css

@font-face {
  font-family: "Open Sans";
  src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"),
       url("/fonts/OpenSans-Regular-webfont.woff") format("woff");
}

Example 3: how to link fonts css

@font-face {
  font-family: myFirstFont;
  src: url(sansation_light.woff);
}

div {
  font-family: myFirstFont;
}
/*Name the font-family and link the font file in the @font-face rule*/

Example 4: css font face

@font-face {
  // Defining what the font will be called
  font-family: thisSpecialFont;
  // Linking to the font file
  src: url(linkToFontFile.woff);
}
body {
  font-family: thisSpecialFont;
}

Example 5: how to link fonts css

@import url(//fonts.googleapis.com/css?family=Open+Sans);
/*When not hosting on my own server use the @import rule which is Google Fonts Versionn and hosted on their server*/