diff --git a/index.html b/index.html
index d4b7cde..2093bad 100644
--- a/index.html
+++ b/index.html
@@ -40,8 +40,40 @@
         </div>
         <div class="q">
             <h2>Office 7.5</h2>
-            <a href="https://repos.libreoffice.gob.mx/windows/general/x86_64/Office_7.4.4.0_Win_x86-64_en-MX_es.msi" download class="download-button">Descargar</a>
 
+            <!--Selección de OS-->
+            <!--button id="download-button">Descargar</button-->
+            <download class="download-button" id="download-button">Descargar</a>
+
+            <script>
+              var downloadButton = document.getElementById("download-button");
+              var OSName = "Unknown OS";
+              if (navigator.platform.indexOf("Win") != -1) OSName = "Windows";
+              if (navigator.platform.indexOf("Mac") != -1) OSName = "MacOS";
+              if (navigator.platform.indexOf("Linux") != -1) OSName = "Linux";
+            
+              switch (OSName) {
+                case "Windows":
+                  downloadButton.addEventListener("click", function() {
+                    window.location.href = "https://repos.libreoffice.gob.mx/windows/general/x86_64/Office_7.4.4.0_Win_x86-64_en-MX_es.msi";
+                  });
+                  break;
+                case "MacOS":
+                  downloadButton.addEventListener("click", function() {
+                    window.location.href = "https://repos.libreoffice.gob.mx/macOS/";
+                  });
+                  break;
+                case "Linux":
+                  downloadButton.addEventListener("click", function() {
+                    window.location.href = "https://repos.libreoffice.gob.mx/debs-rpm/";
+                  });
+                  break;
+                default:
+                  downloadButton.disabled = true;
+                  break;
+              }
+            </script>
+                   
         </div>
         <div>
         <br>