diff --git a/account_ecotax/models/account_ecotax_classification.py b/account_ecotax/models/account_ecotax_classification.py
index ef81bc18a..6f2a87405 100644
--- a/account_ecotax/models/account_ecotax_classification.py
+++ b/account_ecotax/models/account_ecotax_classification.py
@@ -9,7 +9,6 @@ class AccountEcotaxClassification(models.Model):
     _name = "account.ecotax.classification"
     _description = "Account Ecotax Classification"
 
-
     name = fields.Char(required=True)
     code = fields.Char()
     ecotax_type = fields.Selection(
diff --git a/account_ecotax/models/account_move_line.py b/account_ecotax/models/account_move_line.py
index 8557e43b5..60c231353 100644
--- a/account_ecotax/models/account_move_line.py
+++ b/account_ecotax/models/account_move_line.py
@@ -2,7 +2,7 @@
 #   @author Mourad EL HADJ MIMOUNE <mourad.elhadj.mimoune@akretion.com>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
 
-from odoo import api, fields, models
+from odoo import Command, api, fields, models
 
 
 class AcountMoveLine(models.Model):
@@ -65,17 +65,17 @@ def _compute_ecotax(self):
     @api.onchange("product_id")
     def _onchange_product_ecotax_line(self):
         """Unlink and recreate ecotax_lines when modifying the product_id."""
-        self.ecotax_line_ids.unlink() # Remove all ecotax classification
-if self.product_id:
-    self.ecotax_line_ids = [
-        Command.create(
-            {
-                "classification_id":  ecotaxline_prod.classification_id.id
-                "force_amount_unit": ecotaxline_prod.force_amount,
-            }
-        )
-        for ecotaxline_prod in self.product_id.all_ecotax_line_product_ids
-    ]
+        self.ecotax_line_ids.unlink()  # Remove all ecotax classification
+        if self.product_id:
+            self.ecotax_line_ids = [
+                Command.create(
+                    {
+                        "classification_id": ecotaxline_prod.classification_id.id,
+                        "force_amount_unit": ecotaxline_prod.force_amount,
+                    }
+                )
+                for ecotaxline_prod in self.product_id.all_ecotax_line_product_ids
+            ]
 
     def edit_ecotax_lines(self):
         view = {
diff --git a/account_ecotax/static/description/index.html b/account_ecotax/static/description/index.html
index b257d7c7c..a3588d0c2 100644
--- a/account_ecotax/static/description/index.html
+++ b/account_ecotax/static/description/index.html
@@ -8,10 +8,11 @@
 
 /*
 :Author: David Goodger (goodger@python.org)
-:Id: $Id: html4css1.css 8954 2022-01-20 10:10:25Z milde $
+:Id: $Id: html4css1.css 9511 2024-01-13 09:50:07Z milde $
 :Copyright: This stylesheet has been placed in the public domain.
 
 Default cascading style sheet for the HTML output of Docutils.
+Despite the name, some widely supported CSS2 features are used.
 
 See https://docutils.sourceforge.io/docs/howto/html-stylesheets.html for how to
 customize this style sheet.
@@ -274,7 +275,7 @@
   margin-left: 2em ;
   margin-right: 2em }
 
-pre.code .ln { color: grey; } /* line numbers */
+pre.code .ln { color: gray; } /* line numbers */
 pre.code, code { background-color: #eeeeee }
 pre.code .comment, code .comment { color: #5C6576 }
 pre.code .keyword, code .keyword { color: #3B0D06; font-weight: bold }
@@ -300,7 +301,7 @@
 span.pre {
   white-space: pre }
 
-span.problematic {
+span.problematic, pre.problematic {
   color: red }
 
 span.section-subtitle {
@@ -440,7 +441,9 @@ <h2><a class="toc-backref" href="#toc-entry-5">Contributors</a></h2>
 <div class="section" id="maintainers">
 <h2><a class="toc-backref" href="#toc-entry-6">Maintainers</a></h2>
 <p>This module is maintained by the OCA.</p>
-<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
+<a class="reference external image-reference" href="https://odoo-community.org">
+<img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" />
+</a>
 <p>OCA, or the Odoo Community Association, is a nonprofit organization whose
 mission is to support the collaborative development of Odoo features and
 promote its widespread use.</p>