diff --git a/app/src/main/res/drawable/rounded_gray_rectangle.xml b/app/src/main/res/drawable/rounded_gray_rectangle.xml
new file mode 100644
index 0000000..dd08391
--- /dev/null
+++ b/app/src/main/res/drawable/rounded_gray_rectangle.xml
@@ -0,0 +1,6 @@
+<!-- rounded_gray_rectangle.xml -->
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#D3D3D3" /> <!-- 灰色の色 -->
+    <corners android:radius="8dp" /> <!-- 丸みの半径 -->
+</shape>
\ No newline at end of file