diff --git a/index.html b/index.html
index e2866d3..f4b88af 100644
--- a/index.html
+++ b/index.html
@@ -12,6 +12,8 @@
   <style>
   body {
     background-image: url('sisi.png');
+    height: 100%;
+    width: 100%;
   }
   #button-container {
     display: flex;