update speed figure

index.html

@@ -639,7 +639,7 @@ <h2 class="title is-3">Speed</h2>
       </div>
       <div class="container is-max-desktop content" style="text-align: center;">
         <div>
-          <img src="./static/images/speed.jpg" class="interpolation-image" width="80%"/>
+          <img src="./static/images/speed.jpg" class="interpolation-image" width="60%"/>
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         <div class="content has-text-justified">
           The speed gap between our method and DiT widens as the input resolution increases, highlighting the efficiency of our method for high-resolution synthesis.