diff --git a/www/style_Rmd.css b/www/style_Rmd.css
index efc67ae172ef854d13bde46595f8f43e67d25664..aa106702be85ab894c5186635068c5c5586ee65b 100644
--- a/www/style_Rmd.css
+++ b/www/style_Rmd.css
@@ -1,52 +1,68 @@
-html, body {
+html,
+body {
   font-size: 20px;
 }
 
-.pencadre{
-  border:4px; 
-  border-style:solid; 
-  border-color: #034b6f; 
-  background-color: #EEF3F9; 
+.pencadre {
+  border: 4px;
+  border-style: solid;
+  border-color: #034b6f;
+  background-color: #eef3f9;
   padding: 1em;
-  text-align: left ;
-  border-radius : 5px 4px 3px 2px;
+  text-align: left;
+  border-radius: 5px 4px 3px 2px;
+  font-weight: 300;
+  font-size: 22px;
+}
+
+.red_pencadre {
+  border: 4px;
+  border-style: solid;
+  border-color: #d53600;
+  background-color: #f9e9e7;
+  padding: 1em;
+  text-align: left;
+  border-radius: 5px 4px 3px 2px;
   font-weight: 300;
   font-size: 22px;
 }
 
 @font-face {
-    font-family: 'Yanone Kaffeesatz';
-    src:url("../www/YanoneKaffeesatz-Bold.ttf");
+  font-family: "Yanone Kaffeesatz";
+  src: url("../www/YanoneKaffeesatz-Bold.ttf");
 }
 @font-face {
-    font-family: 'Raleway';
-    src:url("../www/Raleway-Regular.ttf");
+  font-family: "Raleway";
+  src: url("../www/Raleway-Regular.ttf");
 }
 
-@import url('https://fonts.googleapis.com/css2?family=Yanone+Kaffeesatz&display=swap');
-@import url('https://fonts.googleapis.com/css2?family=Raleway&display=swap');
+@import url("https://fonts.googleapis.com/css2?family=Yanone+Kaffeesatz&display=swap");
+@import url("https://fonts.googleapis.com/css2?family=Raleway&display=swap");
 
-h3 { /* Header 3 */
-  font-family: 'Yanone Kaffeesatz', sans-serif;
-  color: #034b6f ;
+h3 {
+  /* Header 3 */
+  font-family: "Yanone Kaffeesatz", sans-serif;
+  color: #034b6f;
 }
 
-h2 { /* Header 2 */
-  font-family: 'Yanone Kaffeesatz', sans-serif;
-  color: #034b6f ;
+h2 {
+  /* Header 2 */
+  font-family: "Yanone Kaffeesatz", sans-serif;
+  color: #034b6f;
 }
 
-h1 { /* Header 1 */
-  font-family: 'Yanone Kaffeesatz', sans-serif;
-  color: #034b6f ;
+h1 {
+  /* Header 1 */
+  font-family: "Yanone Kaffeesatz", sans-serif;
+  color: #034b6f;
 }
 
 .toggle {
   display: none;
 }
 
-legend{
-  color: #034b6f ;
+legend {
+  color: #034b6f;
 }
 
 .pquestion {
@@ -61,9 +77,9 @@ legend{
 
 details summary {
   padding: 1em;
-  font-family: 'Yanone Kaffeesatz', sans-serif;
+  font-family: "Yanone Kaffeesatz", sans-serif;
   font-size: 26px;
-  color: #034b6f ;
+  color: #034b6f;
   text-align: center;
 }
 details summary::before {
@@ -77,4 +93,4 @@ details summary:active::before {
 }
 details summary:focus::before {
   content: "▼";
-}
\ No newline at end of file
+}