next.js/examples/blog/styles/main.css

@font-face {
  font-family: "Inter var";
  font-style: normal;
  font-weight: 100 900;
  font-display: block;
  src: url(/fonts/Inter-roman.latin.var.woff2) format("woff2");
}
@font-face {
  font-family: "Inter var";
  font-style: italic;
  font-weight: 100 900;
  font-display: block;
  src: url(/fonts/Inter-italic.latin.var.woff2) format("woff2");
  font-named-instance: "Italic";
}

body {
  font-family:
    "Inter var",
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    "Helvetica Neue",
    Arial,
    "Noto Sans",
    sans-serif,
    "Apple Color Emoji",
    "Segoe UI Emoji",
    "Segoe UI Symbol",
    "Noto Color Emoji";
  -webkit-font-smoothing: subpixel-antialiased;
  font-feature-settings:
    "case" 1,
    "cpsp" 1,
    "dlig" 1,
    "cv01" 1,
    "cv02",
    "cv03" 1,
    "cv04" 1;
  font-variation-settings: "wght" 450;
  font-variant: common-ligatures contextual;
  letter-spacing: -0.02em;
}
b,
strong,
h3,
h4,
h5,
h6 {
  font-variation-settings: "wght" 650;
}
h1 {
  font-variation-settings: "wght" 850;
}
h2 {
  font-variation-settings: "wght" 750;
}

@media screen and (min-device-pixel-ratio: 1.5),
  screen and (min-resolution: 1.5dppx) {
  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }
}

details summary {
  cursor: pointer;
}

img.next-image {
  margin: 0;
}

.prose a {
  color: #0074de;
}

.nav-line .nav-link {
  color: #69778c;
}