diff --git a/index.html b/index.html
index 7303655..0969cc5 100644
--- a/index.html
+++ b/index.html
@@ -11,13 +11,15 @@
   <meta property="og:url" content="https://cat.is-a.dev" />
   <style>
   body {
-    background-image: url('sisi.png');
+    background-image: url('dog.jpg');
     background-size: cover;
     font-family: Arial;
-    align-items: center;
     justify-content: center;
+    align-items: center;
     display: flex;
     flex-direction: column;
+    height: 100vh; /* Add this line */
+    margin: 0; /* Add this line to remove default margin */
   }
 
   #instructions {
@@ -25,8 +27,8 @@
     flex-direction: column;
     align-items: center;
     justify-content: center;
-    height: 20%;
-    max-width: 100%;
+    max-height: 50vh;
+    max-width: 100vw;
     border-radius: 10px;
     background-color: rgba(0, 0, 0, 0.5);
     color: white;