# CSS classes | Bulma v0.5.0: a modern CSS framework based on Flexbox
Bulma v0.5.0 is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.

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Documentation

Everything you need to create a website with Bulma

# Classes

## Bulma is simply a collection of CSS classes. Write the HTML code you want.

Bulma is a CSS framework, meaning that the end result is simply a single `.css` file:
https://github.com/jgthms/bulma/blob/master/css/bulma.css

Because Bulma solely comprises CSS classes, the HTML code you write has no impact on the styling of your page. That's why `.input` exists as a class, so you can choose which `<input type="text">` elements you want to style.

Bulma only styles generic tags directly twice:

- `generic.sass` to define a basic style for your page
- the `.content` class to use for any textual content, like WYSIWYG

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