diff --git a/playground.html b/playground.html
index 2b63073..9f89950 100644
--- a/playground.html
+++ b/playground.html
@@ -1,5 +1,6 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
@@ -8,16 +9,72 @@
     <link rel="stylesheet" href="./css/reset.css">
     <link rel="stylesheet" href="./css/playground.css">
 </head>
+
 <body>
     <h1>Tricks</h1>
 
     <h2>Gradient text with CSS</h2>
-    This one comes from Kevin Powell, on a YouTube video short <a href="https://www.youtube.com/watch?v=IQT4aI_Iup4">"Gradient text with CSS | CSS Tip of the Day"</a>. It applies a colored gradient to text.
+    This one comes from Kevin Powell, on a YouTube video short <a
+        href="https://www.youtube.com/watch?v=IQT4aI_Iup4">"Gradient text with CSS | CSS Tip of the Day"</a>. It applies
+    a colored gradient to text.
 
     Note that the -webkit- is needed to make this trick work in Safari.
 
     <h1 class="gradient-text">Thingy Text thats with a gradient</h1>
 
+    <h2>Tip for screen sized approriate images</h2>
+
+    <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-480.jpg" srcset="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-960.jpg  2x, 
+	   	  	   https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-1440.jpg 3x, 
+		 				 https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-1920.jpg 4x" alt="shiny black dog looking pensive"
+        width="480" height="360">
+
+    <pre>
+&ltimg src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-480.jpg" 
+srcset="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-960.jpg  2x, 
+            https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-1440.jpg 3x, 
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog-1920.jpg 4x" 
+alt="shiny black dog looking pensive" 
+width="480" height="360"&gt
+    </pre>
+
+    Better though is
+
+    <picture>
+        <source media="(min-width:600px)" srcset="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-320.jpg  320w,
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-480.jpg  480w, 
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-720.jpg  720w,
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-960.jpg  960w, 
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-1440.jpg 1440w, 
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-1920.jpg 1920w">
+        <source srcset="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-320.jpg 320w,
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-480.jpg 480w, 
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-720.jpg 720w,
+                        https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-960.jpg 960w">
+        <img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-480.jpg" alt="smiling black dog"
+            height="360px" width="480px">
+    </picture>
+
+    <pre>
+&ltpicture&gt
+    &ltsource media="(min-width:600px)"
+            srcset="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-320.jpg  320w,
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-480.jpg  480w, 
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-720.jpg  720w,
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-960.jpg  960w, 
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-1440.jpg 1440w, 
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-1920.jpg 1920w" &gt
+    &ltsource srcset="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-320.jpg 320w,
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-480.jpg 480w, 
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-720.jpg 720w,
+                    https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-cropped-960.jpg 960w" &gt
+    &ltimg src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/10558/dog2-480.jpg" 
+            alt="smiling black dog"
+            height="360px" width="480px"&gt
+&lt/picture&gt
+    </pre>
+
     <h2>???</h2>
 </body>
+
 </html>
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