Index: gc_lang/fr/mailext/content/lex_editor.css
==================================================================
--- gc_lang/fr/mailext/content/lex_editor.css
+++ gc_lang/fr/mailext/content/lex_editor.css
@@ -80,12 +80,12 @@
 #lexicon_table {
     width: 600px;
     height: 650px;
 }
 
-.list_header {
-    padding: 2px 10px;
+.listheader {
+    padding: 2px 0;
     font-weight: bold;
     background-color: hsl(0, 0%, 95%);
     border-bottom: 1px solid hsl(0, 0%, 50%);
 }
 .info_label {

Index: gc_lang/fr/mailext/content/lex_editor.js
==================================================================
--- gc_lang/fr/mailext/content/lex_editor.js
+++ gc_lang/fr/mailext/content/lex_editor.js
@@ -63,13 +63,13 @@
         this.nEntry = 0
         this._createHeader();
     }
 
     _createHeader () {
-        let xListheadNode = createNode("richlistitem");
+        let xListheadNode = createNode("richlistitem", { class: "listheader" });
         for (let i=0;  i < this.lColumn.length;  i++) {
-            xListheadNode.appendChild(createNode("label", { class: "listheader", value: this.lColumn[i], flex: this.lColumnWidth[i] }));
+            xListheadNode.appendChild(createNode("label", { value: this.lColumn[i], width: this.lColumnWidth[i] }));
         }
         this.xTable.appendChild(xListheadNode);
     }
 
     clear () {
@@ -112,12 +112,12 @@
         }
     }
 
     _addRow (lData) {
         let xRowNode = createNode("richlistitem", { id: this.sNodeId + "_item_" + this.iEntryIndex, value: this.iEntryIndex });
-        for (let data of lData) {
-            xRowNode.appendChild(createNode("label", { class:"listcell", label: data }));
+        for (let i=0;  i < lData.length;  i++) {
+            xRowNode.appendChild(createNode("label", { class: "listcell", value: lData[i], width: this.lColumnWidth[i] }));
         }
         this.xTable.appendChild(xRowNode);
         this.iEntryIndex += 1;
     }
 
@@ -542,14 +542,14 @@
         oTagsTable.fill(lEntry);
     }
 }
 
 
-const oGenWordsTable = new Table("generated_words_table", ["Flexions", "Étiquettes"], [1, 1], "progress_new_words");
-const oLexiconTable = new Table("lexicon_table", ["Flexions", "Lemmes", "Étiquettes"], [10, 7, 10], "progress_lexicon", "num_entries");
-const oSearchTable = new Table("search_table", ["Flexions", "Lemmes", "Étiquettes"], [10, 7, 10], "progress_search", "search_num_entries");
-const oTagsTable = new Table("tags_table", ["Étiquette", "Signification"], [1, 10], "progress_lexicon");
+const oGenWordsTable = new Table("generated_words_table", ["Flexions", "Étiquettes"], ["125px", "225px"], "progress_new_words");
+const oLexiconTable = new Table("lexicon_table", ["Flexions", "Lemmes", "Étiquettes"], ["190px", "150px", "200px"], "progress_lexicon", "num_entries");
+const oSearchTable = new Table("search_table", ["Flexions", "Lemmes", "Étiquettes"], ["190px", "150px", "200px"], "progress_search", "search_num_entries");
+const oTagsTable = new Table("tags_table", ["Étiquette", "Signification"], ["75px", "475px"], "progress_lexicon");
 
 conj.init(helpers.loadFile("resource://grammalecte/fr/conj_data.json"));
 
 
 oTagsInfo.load();