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Get started with CNBV Styles

CNBV Styles is a powerful, feature-packed frontend toolkit. Build anything—from prototype to production—in minutes.

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Graphic Identity

The main objective of this guide is to standardize the development of internal and external applications of the CNBV. It is essential that when creating new applications, they are based on the guidelines established, since they are designed to ensure quality in each project.

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Quick start

Get started by including CNBV Styles production-ready CSS and JavaScript via CDN without the need for any build steps.

  1. Create a new index.html file in your project root. Include the <meta name="viewport"> tag as well for proper responsive behavior in mobile devices. 

    <!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>CNBV Styles demo</title>
  </head>
  <body>
    <h1>Hello, CNBV!</h1>
  </body>
</html>

  2. Include CNBV Styles CSS and JS. Place the <link> tag in the <head> for our CSS, and the <script> tag for our JavaScript bundle (including Popper for positioning dropdowns, poppers, and tooltips) before the closing </body>. Learn more about our CDN links. 

    <!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <title>CNBV Styles demo</title>
    <link href="https://cdn-styles.cnbv.gob.mx/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-YFOX98sWYduCmnfJzFQWyAens0rHIPzErKaB2hWBL1Ll8F9ylKImqWsKOFP7ZZ1d" crossorigin="anonymous">
  </head>
  <body>
    <h1>Hello, CNBV!</h1>
    <script src="https://cdn-styles.cnbv.gob.mx/js/bootstrap.bundle.min.js" integrity="sha384-gcGvOMbm9I8iWWdNCiWGQFc0BdjBUPG2Ae31h5knIODLrWrGH+IHZwatn4ayQG1Q" crossorigin="anonymous"></script>
  </body>
</html>

    You can also include Popper and our JS separately. If you don’t plan to use dropdowns, popovers, or tooltips, save some kilobytes by not including Popper. 

    <script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.11.8/dist/umd/popper.min.js" integrity="sha384-I7E8VVD/ismYTF4hNIPjVp/Zjvgyol6VFvRkX/vR+Vc4jQkC+hVqc2pM8ODewa9r" crossorigin="anonymous"></script>
<script src="https://cdn-styles.cnbv.gob.mx/js/bootstrap.min.js" integrity="sha384-BS65PQr9O5FFVd56RdAYc4TNKhi2Pv7Xwui8gF6Nx+7DpjV51FCjY1lcCPHzoZsA" crossorigin="anonymous"></script>

  3. Hello, world! Open the page in your browser of choice to see your page. Now you can start building with CNBV Styles by creating your own layout, adding dozens of components, and utilizing our official examples.

As reference, here are our primary CDN links.

Description URL
CSS https://cdn-styles.cnbv.gob.mx/css/bootstrap.min.css
JS https://cdn-styles.cnbv.gob.mx/js/bootstrap.bundle.min.js

Important globals

Bootstrap employs a handful of important global styles and settings, all of which are almost exclusively geared towards the normalization of cross browser styles. Let’s dive in.

HTML5 doctype

Bootstrap requires the use of the HTML5 doctype. Without it, you’ll see some funky and incomplete styling. 

<!doctype html>
<html lang="en">
  ...
</html>

Viewport meta

Bootstrap is developed mobile first, a strategy in which we optimize code for mobile devices first and then scale up components as necessary using CSS media queries. To ensure proper rendering and touch zooming for all devices, add the responsive viewport meta tag to your <head>. 

<meta name="viewport" content="width=device-width, initial-scale=1">

You can see an example of this in action in the quick start.

Box-sizing

For more straightforward sizing in CSS, we switch the global box-sizing value from content-box to border-box. This ensures padding does not affect the final computed width of an element, but it can cause problems with some third-party software like Google Maps and Google Custom Search Engine.

On the rare occasion you need to override it, use something like the following: 

.selector-for-some-widget {
  box-sizing: content-box;
}

With the above snippet, nested elements—including generated content via ::before and ::after—will all inherit the specified box-sizing for that .selector-for-some-widget.

Learn more about box model and sizing at CSS Tricks.

Reboot

For improved cross-browser rendering, we use Reboot to correct inconsistencies across browsers and devices while providing slightly more opinionated resets to common HTML elements.