diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index bfca7da..a64054a 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -179,7 +179,7 @@
       <workItem from="1703548146035" duration="5923000" />
       <workItem from="1703554157001" duration="5970000" />
       <workItem from="1703566127086" duration="2719000" />
-      <workItem from="1703575373869" duration="9829000" />
+      <workItem from="1703575373869" duration="9898000" />
     </task>
     <task id="LOCAL-00001" summary="fix api bug">
       <option name="closed" value="true" />
diff --git a/README.md b/README.md
index 005b74f..fc2ec0e 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,9 @@ CodeGRITS stands for **G**aze **R**ecording & **I**DE **T**racking **S**ystem, w
 for empirical software engineering (SE) researchers. CodeGRITS is built on top of IntelliJ’s SDK, with wide
 compatibility with the entire family of JetBrains IDEs to track developers’ IDE interactions and eye gaze data.
 
+<div style="text-align:center">
 <img src="./docs/imgs/overview.png" width="600">
+</div>
 
 ## Key Features