don't display scores if not hovered

static/index.css

@@ -85,3 +85,11 @@ section#main {
 pre {
     white-space: pre-wrap;
 }
+
+.score-content {
+    display:none;
+}
+
+.score:hover .score-content {
+    display: inline;
+}

static/js/index.js

@@ -295,6 +295,12 @@ class Game extends GameBasic {
         let jason = await (fetch('/leaderboard').then(x => x.text()))
 
         document.querySelector('.lb').textContent = jason;
+
+        let sant = document.querySelector('.lb').innerHTML;
+
+        sant = sant.replaceAll(/\[([^\[]+)\]/g,'<span class="score">[<span class="score-content">$1</span>]</span>');
+
+        document.querySelector('.lb').innerHTML = sant;
     }
 }