diff --git a/wiki/pages/proof-of-concept.html b/wiki/pages/proof-of-concept.html
index ae36a988c72a8befc9e384ffbcc1c1dc50b0d845..5792e0742e868a622a1488601ccf985c264a8d2d 100644
--- a/wiki/pages/proof-of-concept.html
+++ b/wiki/pages/proof-of-concept.html
@@ -76,7 +76,6 @@
         <p style="text-align: center; font-size: 0.9em; margin-top: 10px;">A. Galactose-induced, add muscone organic solution.</p>
         <p style="text-align: center; font-size: 0.9em; margin-top: 10px;">B. Galactose-induced, without muscone.</p>
       </div>
-    </div>
       <p>We have tested the functionality of the designed muscone molecular switch in Saccharomyces cerevisiae using the GFP reporter gene intensity. Additionally, we have reduced background noise from wild-type strains by knocking out the original mating pathway receptors in Saccharomyces cerevisiae.</p>
       <p>For more information, please refer to <a href="https://2024.igem.wiki/tsinghua/therapy-system" style="color: #FF5151" >Therapy system</a>.</p>
       <h4>Communication with relevant social stakeholders</h4>