copy animation is now wonderful

proj/y2t/assets/css/style.css

@@ -145,25 +145,28 @@ div.copied {
     position: absolute;
     background-color: var(--success);
     color: white;
-    font-size: 1.2rem;
+    font-size: 1.5rem;
     padding: 10px;
-    right: -15px;
-    top: -10px;
-    transform: rotate(10deg);
+    right: -20px;
+    top: -5px;
+    transform: rotate(12deg);
+    opacity: 0;
 }
 
 .success {
-  animation: fade-in 3s forwards;
+  animation: fade-in 2s forwards;
 }
 
 @keyframes fade-in {
   0% {
     opacity: 0;
+    scale: 0%;
   }
-  30% {
+  10% {
     opacity: 1;
+    scale: 100%;
   }
-  80% {
+  50% {
     opacity: 1;
   }
   100% {