don’t make any changes to this code besides adding a white and black button, the black button makes the background black with white text, and the white button makes the background white with black text

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        <title>HTML Editor - Full Version</title>
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        <h1>HTML Editor - Full Version</h1>
        <pre contenteditable="">                <span style="font-family: &quot;courier new&quot;, courier, monospace; font-size: 22px;"><strong>INT. TOWER - NIGHT</strong></span><font face="courier new, courier, monospace"> 
</font><span style="font-family: &quot;courier new&quot;, courier, monospace; font-size: 11px;">It's the middle of the night. It's cold and nobody knows where anyone is. Henry and Jason are both very cold.</span><div><br></div><div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">JASON</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">What time is it?

HENRY</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">I have no idea.</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;"><br></span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">Henry does have an idea, but he isn't sure if it would work.</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;"><br></span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">CUT TO:</span></span></div></div></pre>
        <pre contenteditable="">                <span style="font-family:courier new,courier,monospace;"><span style="font-size:22px;"><strong>INT. TOWER - MORNING</strong></span></span><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">It's the next day. You can hear birds chirping.</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;"><br></span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">JASON</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">Hey, look!</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;"><br></span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">He looks outside. It's clear.</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;"><br></span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">HENRY</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">The rain is gone!</span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;"><br></span></span></div><div><span style="font-family:courier new,courier,monospace;"><span style="font-size:11px;">FADE OUT:</span></span></div></pre></body></html>