diff --git a/elixir_dss/templates/about.html b/elixir_dss/templates/about.html
index fa71761..dd6dc38 100644
--- a/elixir_dss/templates/about.html
+++ b/elixir_dss/templates/about.html
@@ -218,7 +218,7 @@ <h3 class="h6 fw-bold mb-2">GitHub Repository</h3>
                     <i class="bi bi-journal-bookmark fs-1 mb-3"></i>
                     <h3 class="h6 fw-bold mb-2">Documentation</h3>
                     <p class="text-secondary small mb-3">Technical documentation and user guide.</p>
-                    <a href="https://elixir-luxembourg.github.io/dss/">Documentation & User Guide</a>
+                    <a href="https://elixir-luxembourg.github.io/dss/" target="_blank" class="btn btn-outline-dark">Documentation & User Guide</a>
                 </div>
             </div>