How to capitalize part of an element in html/css? : <p>there I have the following element:</p>

<pre><code>&lt;h1&gt; Welcome in our flat. &lt;/h1&gt;
</code></pre>

<p>And I would like to modify it with CSS so that what it gonna be displayed will be:</p>

<p>Welcome to OUR flat.</p>

<p>So, I wanna capitalize the word OUR. Does anyone know how I can do that?</p>
