display credits on game over

app.js

@@ -441,6 +441,7 @@ function newGame(startLevel) {
     startSection.style.display = "none"
     gameSection.style.display = "block"
     settingsSection.style.display = "none"
+    footer.style.display = "none"
 
     state = STATE.PLAYING
     pressedKeys = new Set()
@@ -631,6 +632,7 @@ function gameOver() {
     startSection.style.display = "block"
     gameSection.style.display = "block"
     settingsSection.style.display = "none"
+    footer.style.display = "block"
 }
 
 function autorepeat() {

themes/Effect/style.css

@@ -194,6 +194,7 @@ footer {
     left: 50%;
     bottom: 1em;
     transform: translateX(-50%);
+    display: none;
 }
 
 a {

themes/Kubow/style.css

@@ -276,6 +276,7 @@ footer {
     left: 50%;
     bottom: 1em;
     transform: translateX(-50%);
+    display: none;
 }
 
 a {

themes/default/style.css

@@ -198,6 +198,7 @@ footer {
     left: 50%;
     bottom: 1em;
     transform: translateX(-50%);
+    display: none;
 }
 
 a {
@@ -227,7 +228,6 @@ a {
     border: 0 !important;
 }
 
-
 #leaderboard td:first-child {
     text-align: left;
 }