diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..9940f4a
Binary files /dev/null and b/.DS_Store differ
diff --git a/Transcendence/srcs/frontend/src/tetris.css b/Transcendence/srcs/frontend/src/tetris.css
index 1dd568f..1e88adc 100644
--- a/Transcendence/srcs/frontend/src/tetris.css
+++ b/Transcendence/srcs/frontend/src/tetris.css
@@ -187,8 +187,8 @@ button:disabled { opacity: 0.3; cursor: not-allowed; }
     border: 1px solid var(--border);
     border-radius: 6px;
     padding: 14px 20px;
-    margin-top: 0px;   /* plus bas */
-    margin-left: -800px; /* vers la gauche */
+    margin-top: -250px;   /* plus bas */
+    margin-left: -600px; /* vers la gauche */
     box-shadow: 0 0 20px rgba(0,255,231,0.05);
     position: relative;
     z-index: 1;
diff --git a/Transcendence/srcs/frontend/src/tetris.js b/Transcendence/srcs/frontend/src/tetris.js
index 91aabee..428ff93 100644
--- a/Transcendence/srcs/frontend/src/tetris.js
+++ b/Transcendence/srcs/frontend/src/tetris.js
@@ -47,6 +47,7 @@ class Tetris {
         this.isPaused   = false;
         this.grid       = this._createGrid(10, 20);
         this.score      = 0;
+        this.count      = 0;
         this.timeToDown = this.initialTimeToDown;
         this.storedPiece = null;
         this.canStore    = true;
@@ -98,7 +99,7 @@ class Tetris {
             this.lastTime = currentTime;
             this.accumulator += deltaTime;
 
-            while (this.accumulator >= this.timeToDown) {
+            while (this.isRunning && this.accumulator >= this.timeToDown) {
                 this._tick();
                 this.accumulator -= this.timeToDown;
                 if (this.accumulator > this.timeToDown * 3) {
@@ -268,9 +269,9 @@ class Tetris {
     }
 
     _makeHarder() {
-        if (this.count >= this.hardening){
+        if (this.count >= this.hardening) {
             this.count = 0;
-            this.timeToDown -= this.decrementTTD;
+            this.timeToDown = Math.max(100, this.timeToDown - this.decrementTTD);
         }
     }