diff --git a/03 - CSS Variables/index-FINISHED.html b/03 - CSS Variables/index-FINISHED.html
index c3217fc003..848a0f95f9 100644
--- a/03 - CSS Variables/index-FINISHED.html	
+++ b/03 - CSS Variables/index-FINISHED.html	
@@ -9,13 +9,13 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
 
   <div class="controls">
     <label for="spacing">Spacing:</label>
-    <input type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">
+    <input id="spacing" type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">
 
     <label for="blur">Blur:</label>
-    <input type="range" name="blur" min="0" max="25" value="10" data-sizing="px">
+    <input id="blur" type="range" name="blur" min="0" max="25" value="10" data-sizing="px">
 
     <label for="base">Base Color</label>
-    <input type="color" name="base" value="#ffc600">
+    <input id="base" type="color" name="base" value="#ffc600">
   </div>
 
   <img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">
diff --git a/03 - CSS Variables/index-START.html b/03 - CSS Variables/index-START.html
index 7171607a8b..ca2b59d077 100644
--- a/03 - CSS Variables/index-START.html	
+++ b/03 - CSS Variables/index-START.html	
@@ -9,13 +9,13 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
 
   <div class="controls">
     <label for="spacing">Spacing:</label>
-    <input type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">
+    <input id="spacing" type="range" name="spacing" min="10" max="200" value="10" data-sizing="px">
 
     <label for="blur">Blur:</label>
-    <input type="range" name="blur" min="0" max="25" value="10" data-sizing="px">
+    <input id="blur" type="range" name="blur" min="0" max="25" value="10" data-sizing="px">
 
     <label for="base">Base Color</label>
-    <input type="color" name="base" value="#ffc600">
+    <input id="base" type="color" name="base" value="#ffc600">
   </div>
 
   <img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">