diff --git a/front/css/pialert.css b/front/css/pialert.css
index f80c25e4..0f44a43a 100755
--- a/front/css/pialert.css
+++ b/front/css/pialert.css
@@ -906,4 +906,30 @@ height: 50px;
 {
     width:480px;
     
-}
\ No newline at end of file
+}
+
+/*Hidden special button*/
+
+@media (max-width: 464px) {
+  #back-button {
+    display: none;
+  }
+}
+
+@media (max-width: 432px) {
+  #next-button {
+    display: none;
+  }
+}
+
+@media (max-width: 400px) {
+  #reload-button {
+    display: none;
+  }
+}
+
+@media (max-width: 365px) {
+  #fullscreen-button {
+    display: none;
+  }
+}