diff --git a/README.md b/README.md
index 11b2d9c..3e9db7c 100644
--- a/README.md
+++ b/README.md
@@ -29,9 +29,9 @@
 - 这不是一个简单的知识体系，每个知识点都有**详细的导读**  
 ![](https://upload-images.jianshu.io/upload_images/3167794-9f7e92f49fb1ef3c.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
 
-![](https://upload-images.jianshu.io/upload_images/3167794-87622e80422d0498.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
+  ![](https://upload-images.jianshu.io/upload_images/3167794-87622e80422d0498.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
 
-![](https://upload-images.jianshu.io/upload_images/3167794-169b62f1a0f01acd.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
+  ![](https://upload-images.jianshu.io/upload_images/3167794-169b62f1a0f01acd.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
 
 - 这不是一个简单的知识概述，每个知识点都有**学习方法和顺序指引**  
 ![](https://upload-images.jianshu.io/upload_images/3167794-2bfad9123c3d6c7a.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
@@ -39,7 +39,7 @@
 - 这不是一个简单的资源收集项目，每篇资料都有**闪亮的优点**  
 ![](https://upload-images.jianshu.io/upload_images/3167794-87076e7ee37a1dd7.png?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
 
-![](https://upload-images.jianshu.io/upload_images/3167794-a76cfb45d0a4fd1f.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)
+  ![](https://upload-images.jianshu.io/upload_images/3167794-a76cfb45d0a4fd1f.PNG?imageMogr2/auto-orient/strip%7CimageView2/2/w/1240)