diff --git a/README.md b/README.md
index f40d41a8..f17e345c 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
English | [简体中文](README_zh.md)
- 
+ 
diff --git a/README_zh.md b/README_zh.md
index 6f2e5e2b..abb3d090 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -1,7 +1,7 @@
简体中文 | [English](README.md)
-
+
diff --git a/imgs/flutter_server_box.png b/imgs/flutter_server_box.png
new file mode 100644
index 00000000..68e34ee7
Binary files /dev/null and b/imgs/flutter_server_box.png differ
diff --git a/imgs/flutter_server_box.svg b/imgs/flutter_server_box.svg
deleted file mode 100644
index a81ac5f5..00000000
--- a/imgs/flutter_server_box.svg
+++ /dev/null
@@ -1 +0,0 @@
-
\ No newline at end of file