Bootstrap 4 border utilities : <p>I feel like this should be obvious to find but I have not come up with anything. Bootstrap 4 has utility class for adding and removing a border, but is there support for defining the border width or style like solid or dashed?</p>

<pre><code>&lt;span class="border"&gt;&lt;/span&gt;
&lt;span class="border-top"&gt;&lt;/span&gt;
&lt;span class="border-right"&gt;&lt;/span&gt;
&lt;span class="border-bottom"&gt;&lt;/span&gt;
&lt;span class="border-left"&gt;&lt;/span&gt;
</code></pre>

<p>There are some classes that changes the margins and padding such as <code>mr-3</code> and <code>pt-2</code>.</p>

<p>Maybe I just need to define them myself?</p>
