diff --git a/01 - JavaScript Drum Kit/style.css b/01 - JavaScript Drum Kit/style.css
index 3e0a320b37..075578c930 100644
--- a/01 - JavaScript Drum Kit/style.css	
+++ b/01 - JavaScript Drum Kit/style.css	
@@ -1,6 +1,6 @@
 html {
   font-size: 10px;
-  background:url(http://i.imgur.com/b9r5sEL.jpg) bottom center;
+  background: url(http://i.imgur.com/b9r5sEL.jpg) bottom center;
   background-size: cover;
 }
 body,html {
@@ -10,41 +10,41 @@ body,html {
 }
 
 .keys {
-  display:flex;
-  flex:1;
-  min-height:100vh;
+  display: flex;
+  flex: 1;
+  min-height: 100vh;
   align-items: center;
   justify-content: center;
 }
 
 .key {
-  border:4px solid black;
-  border-radius:5px;
-  margin:1rem;
+  border: .4rem solid black;
+  border-radius: .5rem;
+  margin: 1rem;
   font-size: 1.5rem;
-  padding:1rem .5rem;
-  transition:all .07s;
-  width:100px;
+  padding: 1rem .5rem;
+  transition: all .07s ease;
+  width: 10rem;
   text-align: center;
-  color:white;
-  background:rgba(0,0,0,0.4);
-  text-shadow:0 0 5px black;
+  color: white;
+  background: rgba(0,0,0,0.4);
+  text-shadow: 0 0 .5rem black;
 }
 
 .playing {
-  transform:scale(1.1);
-  border-color:#ffc600;
-  box-shadow: 0 0 10px #ffc600;
+  transform: scale(1.1);
+  border-color: #ffc600;
+  box-shadow: 0 0 1rem #ffc600;
 }
 
 kbd {
   display: block;
-  font-size: 40px;
+  font-size: 4rem;
 }
 
 .sound {
   font-size: 1.2rem;
   text-transform: uppercase;
-  letter-spacing: 1px;
-  color:#ffc600;
+  letter-spacing: .1rem;
+  color: #ffc600;
 }