Update index.html

Author: oresama123

index.html

@@ -200,7 +200,7 @@ <h5 class="card-title">Fan-Choice Prize "Next stop——Redang Island!" - 4th-An
           <h5 class="card-title">Best Posts HoYoLab Featured "Happy Chinese New Year~" - FuHua Fanart</h5>
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           <p class="card-text">January 23, 2022</p>
-          <a href="https://x.com/HoYoLAB_Mimo/status/1496016912379260928" target="_blank" class="btn btn-primary shadow">HoYoLab Featured</a>
+          <a href="https://x.com/HoYoLAB_Mimo/status/1496016912379260928" target="_blank" class="btn shadow">HoYoLab Featured</a>
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