p.thick {
  font-weight: bold;
<h1 style="font-size:10vw">Hello World</h1>
}

hiiiiii


<audio controls autoplay style="display: none">
  <source src="http://up.thirdculture.top/twGq9k6JiX/Untitled%2010.mp3" type="audio/mpeg">
</audio>