diff --git a/css/main.css b/css/main.css
index 075cf2c..2af6222 100644
--- a/css/main.css
+++ b/css/main.css
@@ -35,42 +35,52 @@ body.unsupported #gamepad {
 @keyframes press-button {
     0% {
         fill: #898989;
+        filter: drop-shadow(0 0 0 rgb(0 229 48 / 0.4));
     }
 
     7% {
         fill: #898989;
+        filter: drop-shadow(0 0 0 rgb(0 229 48 / 0.4));
     }
 
     10% {
         fill: #00e530;
+        filter: drop-shadow(0 0 5px rgb(0 229 48 / 0.4));
     }
 
     17% {
         fill: #00e530;
+        filter: drop-shadow(0 0 5px rgb(0 229 48 / 0.4));
     }
 
     20% {
         fill: #898989;
+        filter: drop-shadow(0 0 0 rgb(0 229 48 / 0.4));
     }
 
     27% {
         fill: #898989;
+        filter: drop-shadow(0 0 0 rgb(0 229 48 / 0.4));
     }
 
     30% {
         fill: #00e530;
+        filter: drop-shadow(0 0 5px rgb(0 229 48 / 0.4));
     }
 
     37% {
         fill: #00e530;
+        filter: drop-shadow(0 0 5px rgb(0 229 48 / 0.4));
     }
 
     40% {
         fill: #898989;
+        filter: drop-shadow(0 0 0 rgb(0 229 48 / 0.4));
     }
 
     100% {
         fill: #898989;
+        filter: drop-shadow(0 0 0 rgb(0 229 48 / 0.4));
     }
 }
 
@@ -213,8 +223,7 @@ kbd[title],
     cursor: help;
 }
 
-kbd,
-kbd.dark {
+kbd {
     -moz-box-shadow: inset 0 0 1px rgb(150, 150, 150),
         inset 0 -0.05em 0.4em rgb(80, 80, 80), 0 0.1em 0 rgb(30, 30, 30),
         0 0.1em 0.1em rgba(0, 0, 0, 0.3);
@@ -236,30 +245,3 @@ kbd.dark {
     color: rgb(250, 250, 250);
     text-shadow: -1px -1px 0 rgb(70, 70, 70);
 }
-
-kbd.light {
-    -moz-box-shadow: inset 0 0 1px rgb(255, 255, 255),
-        inset 0 0 0.4em rgb(200, 200, 200), 0 0.1em 0 rgb(130, 130, 130),
-        0 0.11em 0 rgba(0, 0, 0, 0.4), 0 0.1em 0.11em rgba(0, 0, 0, 0.9);
-    -webkit-box-shadow: inset 0 0 1px rgb(255, 255, 255),
-        inset 0 0 0.4em rgb(200, 200, 200), 0 0.1em 0 rgb(130, 130, 130),
-        0 0.11em 0 rgba(0, 0, 0, 0.4), 0 0.1em 0.11em rgba(0, 0, 0, 0.9);
-    background: -moz-linear-gradient(
-        top,
-        rgb(210, 210, 210),
-        rgb(255, 255, 255)
-    );
-    background: -webkit-gradient(
-        linear,
-        left top,
-        left bottom,
-        from(rgb(210, 210, 210)),
-        to(rgb(255, 255, 255))
-    );
-    background: rgb(250, 250, 250);
-    box-shadow: inset 0 0 1px rgb(255, 255, 255),
-        inset 0 0 0.4em rgb(200, 200, 200), 0 0.1em 0 rgb(130, 130, 130),
-        0 0.11em 0 rgba(0, 0, 0, 0.4), 0 0.1em 0.11em rgba(0, 0, 0, 0.9);
-    color: rgb(50, 50, 50);
-    text-shadow: 0 0 2px rgb(255, 255, 255);
-}