added question about descendent selectors

Author: khan4019

css.html

@@ -576,12 +576,12 @@ <h3>read selector</h3>
 </div>
 <div>
 
-<h2>Deleted Scenses</h2>
-<ul>
-  <li>What are the differences among inline, inline-block, block element?</li>
-  <li>Why reset css is useful? or how normalize.css works?</li>
+<h2>Deleted Scenes</h2>
+<ul>  
+  <li>How descendent css selectors are matched? <a href="https://www.youtube.com/watch?v=EW8Bg_H_P7M">get answer</a></li>
+  <li>Why reset css is useful? or how normalize.css works?</li>  
   <li>How do you test cross-browser compatibility of your site?</li>
-  <li>what is grid layout?</li>
+  <li>What is grid layout?</li>
   <li>How can you make a site responsive?</li>
   <li>z-index, ask something about it</li>
   <li>What do you know about text shadows, box shadows?</li>