diff --git a/index.md b/index.md
index b9c35b9..223e296 100644
--- a/index.md
+++ b/index.md
@@ -4,16 +4,9 @@
 
 # Robust Prompt Optimization for Defending Language Models Against Jailbreaking Attacks
 
-<div style="display: flex; justify-content: space-around; align-items: center;">
-  <div>
-    <img src="figures/gpt4.png" alt="GPT-4" width="30" />
-    <div><em>Fig.1 GPT-4 safety filters can be bypassed by jailbreaks!</em></div>
-  </div>
-  <div>
-    <img src="figures/gpt4_rpo.png" alt="RPO" width="30" />
-    <div><em>Fig.2 RPO enforces harmless responses even after jailbreaks</em></div>
-  </div>
-</div>
+| ![GPT-4](figures/gpt4.png) | ![RPO](figures/gpt4_rpo.png) |
+|:--:|:--:|
+| *Fig.1 GPT-4 safety filters can be bypassed by jailbreaks!* | *Fig.2 RPO enforces harmless responses even after jailbreaks* |
 
 
 ## Abstract