Update style.css

style.css

@@ -4,30 +4,10 @@ h1 {
 }
 
 #duplicate-button {
-  text-decoration: none;
-  text-transform: uppercase;
-  color: #000;
-  cursor: pointer;
-  border: 3px solid;
-  padding: 0.25em 0.5em;
-  box-shadow: 1px 1px 0px 0px, 2px 2px 0px 0px, 3px 3px 0px 0px, 4px 4px 0px 0px, 5px 5px 0px 0px;
-  position: relative;
-  user-select: none;
-  -webkit-user-select: none;
-  touch-action: manipulation;
   margin: auto;
-}
-
-#duplicate-button:active {
-  box-shadow: 0px 0px 0px 0px;
-  top: 5px;
-  left: 5px;
-}
-
-@media (min-width: 768px) {
-  #duplicate-button {
-    padding: 0.25em 0.75em;
-  }
+  color: #fff;
+  background: #1565c0;
+  border-radius: 100vh;
 }
 
 #component-0 {