diff --git a/src/pages/cross/v1.astro b/src/pages/cross/v1.astro
index 534e76d..dd22c99 100644
--- a/src/pages/cross/v1.astro
+++ b/src/pages/cross/v1.astro
@@ -200,7 +200,7 @@ import Layout from "../../layouts/Layout.astro";
         position: relative;
     }
     input[type="checkbox"]:checked {
-        background: blue;
+        background: #FF0000;
     }
     input[type="checkbox"]:checked:after {
         content: "X";
diff --git a/src/pages/cross/v2.astro b/src/pages/cross/v2.astro
index 8956f26..3ef95b1 100644
--- a/src/pages/cross/v2.astro
+++ b/src/pages/cross/v2.astro
@@ -234,7 +234,7 @@ import Layout from "../../layouts/Layout.astro";
         position: relative;
     }
     input[type="checkbox"]:checked {
-        background: blue;
+        background: #FF0000;
     }
     input[type="checkbox"]:checked:after {
         border: none;
diff --git a/src/pages/cross/v3.astro b/src/pages/cross/v3.astro
index 457eda5..33ae394 100644
--- a/src/pages/cross/v3.astro
+++ b/src/pages/cross/v3.astro
@@ -187,7 +187,7 @@ import Layout from "../../layouts/Layout.astro";
         position: relative;
     }
     input[type="checkbox"]:checked {
-        background: blue;
+        background: #FF0000;
     }
     input[type="checkbox"]:checked:after {
         border: none;
diff --git a/src/pages/drawing/index.astro b/src/pages/drawing/index.astro
index bc67dae..c127fd4 100644
--- a/src/pages/drawing/index.astro
+++ b/src/pages/drawing/index.astro
@@ -183,9 +183,9 @@ import Layout from '../../layouts/Layout.astro';
             }
             const outlineImage = this.add.image(customWidth / 2, customHeight / 2, 'outline');
             if(isMobile){
-                outlineImage.setDepth(1).setScale(0.33);
+                outlineImage.setDepth(-1).setScale(0.33);
             } else{
-                outlineImage.setDepth(1).setScale(0.65);   
+                outlineImage.setDepth(-1).setScale(0.65);   
             }
 
             graphics = this.add.graphics();