diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/05.first-steps/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/05.first-steps/textbook.en.md
index 7041959ec..5267a9068 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/05.first-steps/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/05.first-steps/textbook.en.md
@@ -17,7 +17,7 @@ for all levels.
 
 ! To read this page :   
 ! in Spanish : https://m3p2.com/es/lessons/brainstorming-g12-classical-mechanics  
-! in French : https://m3p2.com/fr/lessons/brainstorming-g12-classical-mechanics 
+! in French : https://m3p2.com/fr/lessons/brainstorming-g12-classical-mechanics  
 
 
 ### Foreword
@@ -33,7 +33,7 @@ They can be changed easily, they are not the main structure.
 
 #### Advice on how to structure this level 1 
 
-At this first level, think: <br>
+At this first level, think:    
  * What knowledge on this topic is useful in everyday life.
  * Start from the actions and perceptions of the daily life, using the right vocabulary (example: the arm lever, the couple to remove a bolt with a jack, the figure skater, ...).
  * What amazes us? (example, gyroscope, spinning top). 
@@ -43,15 +43,15 @@ At this first level, chapter titles should be everyday words.
 
 #### To participate
 
-The different proposals are numbered: they start with : 
-[BRST-MECCLAS1-numéro] : Titre<br>
+The different proposals are numbered: they start with :   
+[BRST-MECCLAS1-numéro] + un titre.   
 _(BRST-MECCLAS1 pour Brainstorming STructure MEChanics CLASsical level 1)_
 
 To **add an item, create it** in or after existing items (following the logical order).
-To do this, start your proposition with a new : <br>
+To do this, start your proposition with a new :     
 * *[BRST-MECCLAS1-number] + (three initials in brackets representing you) + Title*
 
-To **react to an existing item*, add your comment after the others
+To **react to an existing item**, add your comment after the others
 starting with three initials in brackets that represent you :
 (CLM): previous comment.<br>
 *(my initials): my comment* 
@@ -63,14 +63,14 @@ To **communicate my proposals**, either :
 * directly on the GitLab m3p2 with your login/password, and after a little training on Git. 
 
    * *Click on "Edit this course"* at the bottom of each column of this page (levels 1 and 2),   
-or of the page "https://m3p2.com/en/lessons/brainstorming-234-classical-mechanics"(levels 2, 3 and 4).
+or of the page "https://m3p2.com/en/lessons/brainstorming-234-classical-mechanics" (levels 2, 3 and 4).
 
    * If you prefer *to see in full screen each column* on this page, go to :   
-For these *general instructions* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/first-steps  
-For *level 1* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n1/brainstorming
-For *level 2* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n2/brainstorming  
-For *level 3* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n3/brainstorming 
-For *level 4* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n4/brainstorming  
+For these *general instructions* :  https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/first-steps  
+For *level 1* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n1/brainstorming   
+For *level 2* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n2/brainstorming    
+For *level 3* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n3/brainstorming    
+For *level 4* : https://m3p2.com/en/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/n4/brainstorming     
 then *to contribute*, click on "*Edit this course*" at the bottom of the page. 
 
 * *In the M3P2 Googledoc* whose link has been given to you.   
@@ -84,8 +84,7 @@ The Gitlab will be kept up to date with your proposals, also translated into Eng
 _(This is not required, but if you can also make your contribution in French, more in_
 _English or Spanish, this will ease the translation work)._
 
-This page at this level can be viewed in a multilingual version at:
-
+This page at this level can be viewed in a multilingual version at :
 https://m3p2.com/polyglot/brainstorming-pedagogical-teams/synthesis-structuring/classical-mechanics/first-steps
 
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