stop bikeshed complaining

Author: svgeesus

css-color-4/Overview.bs

@@ -8044,7 +8044,7 @@ highlight: js
 </p>
 
 <figure>
-	<img src="./images/oklab-Lr-vs-L.svg" alt="">
+	<img src="./images/oklab-Lr-vs-L.svg" alt="" width="560" height="520">
 	<figcaption>Lightness functions of Oklrab and CIE Lab compared to Oklab.</figcaption>
 </figure>