added image preview

README.md

@@ -14,6 +14,9 @@ supports Italic variants for each weight. This font stack provides more
 consistent per-character typesetting across western and asian languages on all
 major modern desktop and mobile operating systems and browsers.
 
+### Preview
+
+<img src="preview.png" alt="Typography preview">
 
 View the docs for type specimens and example text.
 

index.html

@@ -383,8 +383,14 @@ <h3>Variations</h3>
               </tr>
             </thead>
             <tbody style="font-size:2em;">
+              <tr class="t-Thin">
+                <th class="t-Vertical" rowspan="5">system-sans-serif</th>
+                <th style="font-size:1rem;">Thin (100)</th>
+                <td>Aa</td>
+                <td class="t-Italic">Aa</td>
+                <td colspan="2">あア安</td>
+              </tr>
               <tr class="t-Light">
-                <th class="t-Vertical" rowspan="4">sans-serif</th>
                 <th style="font-size:1rem;">Light (300)</th>
                 <td>Aa</td>
                 <td class="t-Italic">Aa</td>