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# Responsive Font Sizes (RFS) for Bootstrap 4

Bootstrap 4.3 introduced Responsive Font Sizes (RFS) which you can enable in the SCSS compiler. If you're compiling the CSS for your project I highly recommend turning it on.

If you're loading Bootstrap from a CDN though you won't be able to take advantage of those RFS rules. This repo offers a quick fix. It's essentially a tiny CSS file with the relevant changes.

### Usage

A couple of options are available:

- **Copy the CSS rules to your site**

1.  Copy the `responsive-rfs.css` rules to your site's CSS
2.  Add the following to your sites `<head>` (after loading Bootstrap's) - `<link href="responsive-rfs.css" rel="stylesheet">`

- **Use a CDN**

1. Add the following to your sites `<head>` (after loading Bootstrap's) - `<link href="https://cdn.jsdelivr.net/gh/coliff/bootstrap-rfs/responsive-rfs.min.css" rel="stylesheet">`

Optional: You can add `media="screen and (max-width: 1200px)"` so it will only load the CSS file on screens up to 1200px, saving a HTTP request for users with larger screens. The CSS has the 'max-width: 1200px' media query included as well so this is optional.
