Overleaf/services/web/frontend/stylesheets/base/typography.scss

// Typography

body {
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility; /* stylelint-disable-line value-keyword-case */
  -moz-osx-font-smoothing: grayscale;
}

// Headings
h1,
h2,
h3,
h4,
h5,
h6,
.h1,
.h2,
.h3,
.h4,
.h5,
.h6 {
  // Apply margin above the heading only when it has a preceding sibling or is inside a row with a preceding sibling
  * > * + &,
  * + .row & {
    margin-top: $spacing-08;
  }
}

h1,
.h1 {
  @include heading-xl;
}

h2,
.h2 {
  @include heading-md;
}

h3,
.h3 {
  @include heading-sm;
}

h4,
.h4 {
  @include heading-xs;
}

h5,
.h5 {
  @include body-base;
}

h6,
.h6 {
  @include body-sm;
}

// Miscellaneous
.small {
  @include body-sm;
}

// Peformatted text, sample output, code, keyboard input elements
// E.g.: Git authentication token
pre {
  @include body-base;
}

code,
kbd,
samp {
  font-size: 1em;
}

.list-style-check-green {
  list-style-image: url('../../../public/img/fa-check-green.svg');
}

.text-muted {
  color: var(--content-disabled) !important;
}

.dm-mono {
  @include font-mono;
}

@include media-breakpoint-up(lg) {
  .text-center-only-desktop {
    text-align: center;
  }
}

@include media-breakpoint-down(lg) {
  .text-center-only-mobile {
    text-align: center;
  }
}