diff --git a/front/dist/resources/style/cowebsite.scss b/front/dist/resources/style/cowebsite.scss
index 33a6b6bf..b752728d 100644
--- a/front/dist/resources/style/cowebsite.scss
+++ b/front/dist/resources/style/cowebsite.scss
@@ -88,21 +88,26 @@
   }
 }
 @media (max-aspect-ratio: 1/1) {
+  
+  #main-container {
+    display: flex;
+    flex-direction: column-reverse;
+  }
 
 
   #cowebsite {
     left: 0;
-    bottom: 0;
+    top: 0;
     width: 100%;
     height: 50%;
     display: flex;
-    flex-direction: column;
+    flex-direction: column-reverse;
 
     &.loading {
-      transform: translateY(90%);
+      transform: translateY(-90%);
     }
     &.hidden {
-      transform: translateY(100%);
+      transform: translateY(-100%);
     }
 
     main {
diff --git a/front/src/Connexion/LocalUser.ts b/front/src/Connexion/LocalUser.ts
index 968787e1..56483976 100644
--- a/front/src/Connexion/LocalUser.ts
+++ b/front/src/Connexion/LocalUser.ts
@@ -14,7 +14,7 @@ export function isUserNameValid(value: string): boolean {
     return regexp.test(value);
 }
 
-export function areCharacterLayersValid(value: string[]): boolean {
+export function areCharacterLayersValid(value: string[] | null): boolean {
     if (!value || !value.length) return false;
     for (let i = 0; i < value.length; i++) {
         if (/^\w+$/.exec(value[i]) === null) {
diff --git a/front/src/WebRtc/CoWebsiteManager.ts b/front/src/WebRtc/CoWebsiteManager.ts
index e352d70c..95885a53 100644
--- a/front/src/WebRtc/CoWebsiteManager.ts
+++ b/front/src/WebRtc/CoWebsiteManager.ts
@@ -32,7 +32,7 @@ class CoWebsiteManager {
     private resizing: boolean = false;
     private cowebsiteMainDom: HTMLDivElement;
     private cowebsiteAsideDom: HTMLDivElement;
-
+    
     get width(): number {
         return this.cowebsiteDiv.clientWidth;
     }
@@ -74,7 +74,7 @@ class CoWebsiteManager {
 
     private initResizeListeners() {
         const movecallback = (event:MouseEvent) => {
-            this.verticalMode ? this.height -= event.movementY / this.getDevicePixelRatio() : this.width -= event.movementX / this.getDevicePixelRatio();
+            this.verticalMode ? this.height += event.movementY / this.getDevicePixelRatio() : this.width -= event.movementX / this.getDevicePixelRatio();
             this.fire();
         }