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Mark Otto 2016-02-06 13:32:53 -08:00
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24
docs/content/reboot.md
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@ -32,6 +32,30 @@ The `<html>` and `<body>` elements are updated to provide better page-wide defau
- The `<body>` also sets a global `font-family` and `line-height`. This is inherited later by some form elements to prevent font inconsistencies.
- For safety, the `<body>` has a declared `background-color`, defaulting to `#fff`.
## Native font stack
The default web (Helvetica Neue, Helvetica, and Arial) fonts have been dropped in Bootstrap 4 and replaced with a "native font stack" for optimum text rendering on every device and OS. Read more about [native font stacks in this Smashing Magazine article](https://www.smashingmagazine.com/2015/11/using-system-ui-fonts-practical-guide/).
{% highlight sass %}
$font-family-sans-serif:
// Safari for OS X and iOS (San Francisco)
-apple-system,
// Chrome for OS X (San Francisco) and Windows (Segoe UI)
BlinkMacSystemFont,
// Windows
"Segoe UI",
// Android
"Roboto",
// Linux distros
"Oxygen", "Ubuntu", "Cantarell", "Fira Sans",
// Older Android
"Droid Sans",
// Basic web fallback
"Helvetica Neue", Arial, sans-serif !default;
{% endhighlight %}
This `font-family` is applied to the `<body>` and automatically inherited globally throughout Bootstrap. To switch the global `font-family`, update `$font-family-base` and recompile Bootstrap.
## Headings and paragraphs
All heading elements—e.g., `<h1>`—and `<p>` are reset to have their `margin-top` removed. Headings have `margin-bottom: .5rem` added and paragraphs `margin-bottom: 1rem` for easy spacing.

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docs/content/typography.md
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@ -15,9 +15,10 @@ Bootstrap includes simple and easily customized typography for headings, body te
Bootstrap sets basic global display, typography, and link styles. Specifically, we:
- Use `$body-bg` to set a `background-color` on the `<body>` (`#fff` by default)
- Use the `$font-family-base`, `$font-size-base`, and `$line-height-base` attributes as our typographic base
- Set the global link color via `$link-color` and apply link underlines only on `:hover`
- Use a [native font stack](/content/reboot/#native-font-stack) that selects the best `font-family` for each OS and device.
- Use the `$font-family-base`, `$font-size-base`, and `$line-height-base` attributes as our typographic base applied to the `<body>`.
- Set the global link color via `$link-color` and apply link underlines only on `:hover`.
- Use `$body-bg` to set a `background-color` on the `<body>` (`#fff` by default).
These styles can be found within `_reboot.scss`, and the global variables are defined in `_variables.scss`.