---
title: Modularity in Bulma
layout: docs
theme: start
doc-tab: start
doc-subtab: modular
breadcrumb:
  - home
  - documentation
  - start
  - start-modular
---

{% capture import %}
// Only load the columns
@use "bulma/sass/grid/columns";
{% endcapture %}

{% capture columns %}
<div class="columns">
  <div class="column">1</div>
  <div class="column">2</div>
  <div class="column">3</div>
  <div class="column">4</div>
  <div class="column">5</div>
</div>
{% endcapture %}

{% capture only_button %}
// Load Bulma's base styles and themes (including the minireset)
@use "bulma/sass/base";
@use "bulma/sass/themes";

// Load the button and title elements and components
@use "bulma/sass/elements/button";
@use "bulma/sass/elements/title";
@use "bulma/sass/components/message";
{% endcapture %}

{% capture buttons %}
<button class="button">Button</button>
<button class="button is-primary">Primary button</button>
<button class="button is-large">Large button</button>
<button class="button is-loading">Loading button</button>
{% endcapture %}

{% capture use_rule %}
@use "path/to/file.scss";
{% endcapture %}

{% capture base_loads %}
// Load Bulma's base styles and themes (including the minireset)
@use "bulma/sass/base";
@use "bulma/sass/themes";

// Load other Bulma components
@use "bulma/sass/elements/button";
@use "bulma/sass/components/message";
{% endcapture %}

<div class="content">
  <p>
    Bulma consists of elements and components defined in dozens of <code>.scss</code> files, that you can <a href="https://sass-lang.com/documentation/at-rules/use/">load individually with the <code>@use</code> keyword</a>.
  </p>

  {% highlight sass %}{{ use_rule }}{% endhighlight %}

  <p>
    While this will correctly load the target file's styles, most Bulma components rely on <strong>base styles</strong> and <strong>CSS variables</strong> defined by the default themes.
  </p>

  <p>
    That is why it's preferable to <em>also</em> load the <code>sass/base</code> folder and the <code>sass/themes</code> folder:
  </p>

  {% highlight sass %}{{ base_loads }}{% endhighlight %}
</div>

{% include docs/elements/anchor.html name="Importing columns" %}

<div class="content">
  <p>
    Layout features like Bulma's columns don't rely on CSS variables defined by Bulma themes. As a result, you can load them directly without requiring any additional file.
  </p>

  <p>
    For example, importing Bulma <strong>columns</strong> only requires to load the file located in the <code>bulma/sass/grid</code> folder.
  </p>

  <p>
    Simply <strong>load</strong> the <code>columns.scss</code> file with the <code>@use</code> keyword
  </p>
  {% highlight sass %}{{ import }}{% endhighlight %}
  <p>
    Now you can use the classes <code>.columns</code> (for the container) and
    <code>.column</code> directly:
  </p>
  {% highlight html %}{{ columns }}{% endhighlight %}
</div>

{% include docs/elements/anchor.html name="Importing Bulma elements and components" %}

<div class="content">
  <p>
    To load Bulma elements like the <code>.button</code> and components like the <code>.message</code>, it's preferable to also load the base styles and default themes.
  </p>

  {% highlight sass %}{{ only_button }}{% endhighlight %}

  <p>You can now use the <code>.button</code> class, and all its modifiers:</p>
  <ul>
    <li>
      <code>.is-active</code>
    </li>
    <li>
      <code>.is-primary</code>, <code>.is-info</code>,
      <code>.is-success</code>...
    </li>
    <li>
      <code>.is-small</code>, <code>.is-medium</code>,
      <code>.is-large</code>
    </li>
    <li>
      <code>.is-outlined</code>, <code>.is-inverted</code>,
      <code>.is-link</code>
    </li>
    <li>
      <code>.is-loading</code>,
      <code>[disabled]</code>
    </li>
  </ul>

  {% highlight html %}{{ buttons }}{% endhighlight %}
</div>

{% capture configuration %}
$section-padding: 3rem 1.5rem !default;
$section-padding-desktop: 3rem 3rem !default;
$section-padding-medium: 9rem 4.5rem !default;
$section-padding-large: 18rem 6rem !default;
{% endcapture %}

{% capture custom_section %}
// Load the section component with custom variables
@use "bulma/sass/layout/section" with (
  $section-padding: 3rem,
  $section-padding-desktop: 4.5rem
);
{% endcapture %}

{% include docs/elements/anchor.html name="Importing with custom Sass variables" %}

<div class="content">
  <p>
    Most Bulma components are configured with Sass variables. For example, the <code>.section</code> layout component uses 4 variables to define its padding:
  </p>
  {% highlight sass %}{{ configuration }}{% endhighlight %}
  <p>
    The <code>@use</code> keyword allows use to configure a module when loading it with our own variables:
  </p>
  {% highlight sass %}{{ custom_section }}{% endhighlight %}
</div>