Update README.md

README.md

@@ -15,7 +15,12 @@ Details about DCA can be accessed at: https://arxiv.org/abs/1909.02117.
 This implementation refers to the project structure of [mulrel-nel](https://github.com/lephong/mulrel-nel).
 
 ## Overall Workflow
-![Alt Text](https://github.com/YoungXiyuan/DCA/blob/master/DCA.gif)
+![Alt Text](https://github.com/YoungXiyuan/DCA/blob/master/DCA.gif?style=centerme)
+
+img[src$="centerme"] {
+  display:block;
+  margin: 0 auto;
+}
 
 ## Data
 Download [data](https://drive.google.com/file/d/1xW-t80cKDMx3ZL-hrRUxlm6QMZIRvUyU/view) from here and unzip to the main folder (i.e. your-path/DCA).