Index: gc_lang/fr/webext/content_scripts/panel.css
==================================================================
--- gc_lang/fr/webext/content_scripts/panel.css
+++ gc_lang/fr/webext/content_scripts/panel.css
@@ -72,10 +72,11 @@
     cursor: pointer;
 }
 div.grammalecte_copy_button {
     border-radius: 2px;
     color: hsla(210, 0%, 100%, .5);
+    margin-right: 10px;
 }
 div.grammalecte_copy_button:hover {
     background-color: hsl(210, 90%, 35%, .5);
     color: hsla(210, 0%, 100%, 1);
 }
@@ -82,10 +83,17 @@
 div.grammalecte_move_button {
     padding: 1px 5px;
     border-radius: 16px;
     color: hsl(180, 0%, 100%);
     opacity: .5;
+}
+div.grammalecte_move_button_changeWidth {
+    padding: 3px 5px;
+}
+div.grammalecte_move_button_changeHeight {
+    padding: 3px 5px;
+    margin-right: 10px;
 }
 div.grammalecte_move_button_center {
     padding: 1px 10px;
     background: center no-repeat url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12"><circle fill="%23fff" cx="6" cy="6" r="4"/></svg>') ;
 }
@@ -104,11 +112,11 @@
 div.grammalecte_move_button_left {
     padding: 1px 10px;
     background: center no-repeat url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="12"><path fill="%23fff" d="m 2,6 6,6 v -12"/></svg>');
 }
 div.grammalecte_move_button:hover {
-    background-color: hsla(180, 80%, 50%, .1);
+    background-color: hsla(180, 80%, 50%, .2);
     color: hsla(180, 0%, 100%, 1);
     opacity: 1;
 }
 div.grammalecte_close_button {
     border-radius: 0 8px 0 4px;

Index: gc_lang/fr/webext/content_scripts/panel.js
==================================================================
--- gc_lang/fr/webext/content_scripts/panel.js
+++ gc_lang/fr/webext/content_scripts/panel.js
@@ -69,12 +69,14 @@
         xButtonLine.appendChild(this.xWaitIcon);
         if (this.sId === "grammalecte_gc_panel") {
             xButtonLine.appendChild(this._createCopyButton());
         }
         if (this.bFlexible) {
-            xButtonLine.appendChild(this._createMoveButton("changeWidth", "⭾", "Bascule la largeur"));
-            xButtonLine.appendChild(this._createMoveButton("changeHeight", "⭿", "Bascule la hauteur"));
+            this.xWidthButton = this._createMoveButton("changeWidth", "L", "Étendre en largeur");
+            this.xHeightButton = this._createMoveButton("changeHeight", "H", "Étendre en hauteur");
+            xButtonLine.appendChild(this.xWidthButton);
+            xButtonLine.appendChild(this.xHeightButton);
         }
         xButtonLine.appendChild(this._createMoveButton("up", " ", "Monter")); // use char ⏶ when Windows 10 be vast majority of OS (Trebuchet MS not updated on other OS)
         xButtonLine.appendChild(this._createMoveButton("left", " ", "À gauche")); // use char ⏴ when Windows 10 be vast majority of OS (Trebuchet MS not updated on other OS)
         xButtonLine.appendChild(this._createMoveButton("center", " ", "Centrer")); // char • can be used already
         xButtonLine.appendChild(this._createMoveButton("right", " ", "À droite")); // use char ⏵ when Windows 10 be vast majority of OS (Trebuchet MS not updated on other OS)
@@ -180,16 +182,23 @@
         this.setSizeAndPosition();
     }
 
     setSizeAndPosition () {
         // size
-        let nWidth = (this.bFlexible && this.bHorizStrech) ? Math.min(this.nWidth*1.5, window.innerWidth-200) : Math.min(this.nWidth, window.innerWidth-200);
-        let nHeight = this.nHeight;
-        if ([4, 5, 6].includes(this.nPosition)) {
-            nHeight = (this.bFlexible && this.bVertStrech) ? (window.innerHeight-100) : Math.min(window.innerHeight-100, this.nHeight);
-        } else {
-            nHeight = (this.bFlexible) ? Math.floor(window.innerHeight*0.45) : this.nHeight;
+        if (this.xWidthButton && this.xHeightButton) {
+            this.xWidthButton.style.opacity = (this.bHorizStrech) ? .9 : .5;
+            this.xHeightButton.style.opacity = (this.bVertStrech) ? .9 : .5;
+        }
+        let nWidth = Math.min(this.nWidth, window.innerWidth-200);
+        let nHeight = ([4, 5, 6].includes(this.nPosition)) ? Math.min(this.nHeight, window.innerHeight-100) : Math.floor(window.innerHeight*0.45);
+        if (this.bFlexible) {
+            if (this.bHorizStrech) {
+                nWidth = Math.min(this.nWidth*1.33, window.innerWidth-200);
+            }
+            if (this.bVertStrech) {
+                nHeight = ([4, 5, 6].includes(this.nPosition)) ? (window.innerHeight-100) : Math.floor(window.innerHeight*0.67);
+            }
         }
         this.xPanel.style.width = `${nWidth}px`;
         this.xPanel.style.height = `${nHeight}px`;
         // position
         let oPos = null;