diff --git a/and_proj/app/src/main/assets/assets/demo0.png b/and_proj/app/src/main/assets/assets/demo0.png
index c4d0e61..3b1b712 100644
Binary files a/and_proj/app/src/main/assets/assets/demo0.png and b/and_proj/app/src/main/assets/assets/demo0.png differ
diff --git a/and_proj/app/src/main/assets/assets/demo4.png b/and_proj/app/src/main/assets/assets/demo4.png
index c4d0e61..3b1b712 100644
Binary files a/and_proj/app/src/main/assets/assets/demo4.png and b/and_proj/app/src/main/assets/assets/demo4.png differ