Make the top table stretch across the whole model card horizontally.

README.md

@@ -143,7 +143,7 @@ th{ color:#e7edff }
 
 <hr/>
 
-<div class="grid grid-3">
+<div class="grid grid-2" style="margin-top: 1.5rem">
   <div class="card">
     <h3>What it is</h3>
     <p><strong>WEBGEN-4B-Preview</strong> focuses solely on generating production-lean websites. It prefers semantic HTML, sane spacing, and modern component blocks (hero, grids, pricing, FAQ).</p>