diff --git a/index.js b/index.js
index 119f9df..1a27f9c 100644
--- a/index.js
+++ b/index.js
@@ -34,7 +34,12 @@ io.on("connection", (client) => {
     });
 
     client.on("message", (data) => {
-        io.sockets.emit("new-message", {author: client.usernameDenis, message: data.message});
+        if(data.message.toLowerCase().includes("denis")) {
+            io.sockets.emit("new-message", {author: client.usernameDenis, message: data.message});
+
+        } else {
+            client.emit("warning");
+        }
     });
 
     lastUsername++;
diff --git a/src/script.js b/src/script.js
index b3f38ae..6ec8b5b 100644
--- a/src/script.js
+++ b/src/script.js
@@ -6,6 +6,7 @@ function addMessage(author, message) {
     li.innerHTML = "<b>" + author + ": </b>";
     li.innerText += message;
     document.getElementById("messages").appendChild(li);
+    document.getElementById("messages").scrollTop = document.getElementById("messages").scrollHeight;
 }
 
 function sendMessage() {
@@ -31,6 +32,10 @@ document.addEventListener("DOMContentLoaded", () => {
             addMessage(data.author, data.message);
         });
 
+        socket.on("warning", () => {
+            addMessage("Rappel", "Vous devez parler uniquement de denis !");
+        });
+
 
     } catch(error) {
         document.getElementById("value").innerText = "Serveur injoingnable !";
@@ -63,3 +68,31 @@ document.getElementById("message-input").addEventListener("keyup", (event) => {
         sendMessage();
     }
 });
+
+
+const addMaximumScaleToMetaViewport = () => {
+    const el = document.querySelector('meta[name=viewport]');
+  
+    if (el !== null) {
+      let content = el.getAttribute('content');
+      let re = /maximum\-scale=[0-9\.]+/g;
+  
+      if (re.test(content)) {
+          content = content.replace(re, 'maximum-scale=1.0');
+      } else {
+          content = [content, 'maximum-scale=1.0'].join(', ')
+      }
+  
+      el.setAttribute('content', content);
+    }
+  };
+  
+  const disableIosTextFieldZoom = addMaximumScaleToMetaViewport;
+  
+  // https://stackoverflow.com/questions/9038625/detect-if-device-is-ios/9039885#9039885
+  const checkIsIOS = () =>
+    /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
+  
+  if (checkIsIOS()) {
+    disableIosTextFieldZoom();
+  }
\ No newline at end of file
diff --git a/src/style.css b/src/style.css
index 811d49b..9f12fde 100644
--- a/src/style.css
+++ b/src/style.css
@@ -153,8 +153,9 @@ body {
     } 
 
     #messages {
+        margin-top: 15vh;
         padding-left: 5vw;
-        height: 80vh;
+        height: 70vh;
         width: 95vw;
     }