Update 'ChatOverlay.css'

Some syntax changes

ChatOverlay.css

@@ -15,11 +15,16 @@
 }
 
 /* remove background from main chat window */
-body, #chat-container {
-  background-color: transparent !important;
+body {
+  background-color: #00000000 !important;
+}
+#chat-container {
+  background-color: #00000000 !important;
 }
 
 /* give each chatmessage a darkish background and assign the animation */
-#chat-container {
-  animation: fade 60s !important;
-} 
+#chat-container > div > div > div > div {
+  background-color: #11111166 !important;
+  animation: fade 12s !important;
+  opacity: 0;
+}