update index.html .Resized image

index.html

@@ -7,7 +7,7 @@
 
 <h1>Hello world!</h1>
 <div><img src="img_hello_world.jpg" alt="Hello World from Space"
-style="width:100%;max-width:960px"></div> 
+style="width:100%;max-width:640px"></div> 
 
 <p>This is the first file in my new Git Repo.</p>
 <p> a new line in our file.</p>