How to make only part of text on top of colored div white? : <p>How could I make only the part of the text on the red div white? (so top stays dark grey, but bottom part white)</p>

<p><a href="https://i.stack.imgur.com/QWEfc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QWEfc.png" alt="image"></a></p>
