adding checkout and add to cart options to sticker page

checkout.html

@@ -197,6 +197,7 @@ <h2>Order Details</h2>
             <button class="place-order-button" onclick="placeOrder()">Place Order</button>
         </div>
     </div>
+
 
     <script>
         document.addEventListener('DOMContentLoaded', () => {
@@ -288,7 +289,88 @@ <h2>Order Details</h2>
     'Ironman Watch': {
         image: 'assets/merchandise/watch.webp',
         price: 50
-    }
+    },
+    'Sticker 1':{
+        image: 'assets/stickers/cartoon-red-yellow-robot.jpg',
+        price: 1.99
+    },
+    'Sticker 2':{
+        image: 'assets/stickers/drawing-iron-man-character.jpg',
+        price: 1.99
+    },
+    'Sticker 3':{
+        image: 'assets/stickers/iron-man-simplified-head.avif',
+        price: 1.99
+    },
+    'Sticker 4':{
+        image: 'assets/stickers/iron-man-vector-illustration-flat-2.avif',
+        price: 1.99
+    },
+    'Sticker 5':{
+        image: 'assets/stickers/iron-man-vector-illustration3.avif',
+        price: 1.99
+    },
+    'Sticker 6':{
+        image: 'assets/stickers/ironman-sticker_1141877-798.avif',
+        price: 1.99
+    },
+    'Sticker 7':{
+        image: 'assets/stickers/ironman-sticker_2.avif',
+        price: 1.99
+    },
+    'Sticker 8':{
+        image: 'assets/stickers/sticker-iron-man-flying-through-air.jpg',
+        price: 1.99
+    },
+    'Sticker 9':{
+        image: 'assets/stickers/sticker-iron-man-with-glowing-eyes.jpg',
+        price: 1.99
+    },
+    'Sticker 10':{
+        image: 'assets/stickers/iron-man-sticker_10.jpg',
+        price: 1.99
+    },
+    'Sticker 11':{
+        image: 'assets/stickers/sticker11.avif',
+        price: 1.99
+    },
+    'Sticker 12':{
+        image: 'assets/stickers/ironman-character-2-numberj_12.jpg',
+        price: 1.99
+    },
+    'Sticker 13':{
+        image: 'assets/stickers/hand-drawing-little-realistic-ironman-13.avif',
+        price: 1.99
+    },
+    'Sticker 14':{
+        image: 'assets/stickers/sticker15.avif',
+        price: 1.99
+    },
+    'Sticker 15':{
+        image: 'assets/stickers/sticker16-1.avif',
+        price: 1.99
+    },
+    'Sticker 16':{
+        image: 'assets/stickers/sticker16.jpg',
+        price: 1.99
+    },
+    'Sticker 17':{
+        image: 'assets/stickers/sticker17.jpg',
+        price: 1.99
+    },
+    'Sticker 18':{
+        image: 'assets/stickers/sticker18.jpg',
+        price: 1.99
+    },
+    'Sticker 19':{
+        image: 'assets/stickers/sticker19.avif',
+        price: 1.99
+    },
+    'Sticker 20':{
+        image: 'assets/stickers/sticker20.jpg',
+        price: 1.99
+    },
+
 };
 
 // Modified addToCart function