Index: gc_lang/fr/webext/content_scripts/menu.css
==================================================================
--- gc_lang/fr/webext/content_scripts/menu.css
+++ gc_lang/fr/webext/content_scripts/menu.css
@@ -4,11 +4,11 @@
 */
 
 /*
     Button
 */
-.grammalecte_menu_main_button {
+div.grammalecte_menu_main_button {
     all: initial;
     position: absolute;
     box-sizing: border-box;
     display: none;
     margin: -8px 0 0 -8px;
@@ -23,11 +23,11 @@
     cursor: pointer;
     box-shadow: 0 0 0 0 hsla(210, 50%, 50%, .5);
     /*z-index: 2147483640; /* maximum is 2147483647: https://stackoverflow.com/questions/491052/minimum-and-maximum-value-of-z-index */
     animation: grammalecte-spin 2s ease 1;
 }
-.grammalecte_menu_main_button:hover {
+div.grammalecte_menu_main_button:hover {
     border: 4px solid hsla(210, 80%, 35%, .5);
     background-color: hsla(210, 80%, 55%, .5);
     animation: grammalecte-spin .5s linear infinite;
 }
 
@@ -53,11 +53,11 @@
 
 
 /*
     Menu
 */
-.grammalecte_menu {
+div.grammalecte_menu {
     all: initial;
     display: none;
     position: absolute;
     margin-left: -10px;
     border-radius: 5px;
@@ -71,18 +71,18 @@
 
 @media print {
     .grammalecte_menu { display: none; }
 }
 
-.grammalecte_menu > div {
+div.grammalecte_menu > div {
     line-height: 21px;
 }
-.grammalecte_menu > div.grammalecte_menu_close_button {
+div.grammalecte_menu > div.grammalecte_menu_close_button {
     line-height: 18px;
 }
 
-.grammalecte_menu_close_button {
+div.grammalecte_menu_close_button {
     float: right;
     margin: 2px 2px 0 0;
     padding: 1px 5px;
     border-radius: 2px;
     background-color: hsl(0, 50%, 50%);
@@ -89,37 +89,37 @@
     color: hsl(0, 20%, 90%);
     font-size: 12px;
     font-weight: bold;
     cursor: pointer;
 }
-.grammalecte_menu_close_button:hover {
+div.grammalecte_menu_close_button:hover {
     background-color: hsl(0, 60%, 50%);
     color: hsl(0, 30%, 96%);
 }
 
-.grammalecte_menu_item {
+div.grammalecte_menu_item {
     padding: 3px 10px;
     background-color: hsl(210, 50%, 40%);
     font-size: 14px;
     color: hsl(210, 50%, 92%);
     cursor: pointer;
 }
-.grammalecte_menu_item:hover {
+div.grammalecte_menu_item:hover {
     background-color: hsl(210, 50%, 45%);
     color: hsl(210, 50%, 100%);
 }
 
-.grammalecte_menu_item_block {
+div.grammalecte_menu_item_block {
     padding: 3px 10px;
     background-color: hsl(210, 50%, 40%);
     font-size: 14px;
     color: hsl(210, 50%, 92%);
     border-top: 1px solid hsl(210, 50%, 30%);
     border-radius: 0 0 3px 3px;
 }
 
-.grammalecte_menu_button {
+div.grammalecte_menu_button {
     display: inline-block;
     padding: 0 5px;
     margin-left: 10px;
     border-radius: 2px;
     background-color: hsl(210, 50%, 45%);
@@ -126,15 +126,15 @@
     font-size: 12px;
     line-height: 1.6;
     text-align: center;
     cursor: pointer;
 }
-.grammalecte_menu_button:hover {
+div.grammalecte_menu_button:hover {
     background-color: hsl(210, 50%, 50%);
 }
 
-.grammalecte_menu_header {
+div.grammalecte_menu_header {
     padding: 2px 10px;
     background-color: hsl(210, 50%, 30%);
     background-image:  url('data:image/png;base64,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');
     background-repeat: no-repeat;
     background-position: 10% 50%;
@@ -142,9 +142,9 @@
     font-family: "Trebuchet MS", "Fira Sans", "Liberation Sans", sans-serif;
     color: hsl(210, 50%, 90%);
     text-shadow: 0px 0px 2px hsla(210, 10%, 10%, .9);
     text-align: center;
 }
-.grammalecte_menu_footer {
+div.grammalecte_menu_footer {
     padding: 2px 10px;
     background-color: hsl(210, 50%, 30%);
 }