diff --git a/session_5/session_5.Rmd b/session_5/session_5.Rmd
index 9f8d63cf24ccf96c4e81d7a526bf10b3afb139a4..9be414216304055a9da63de0676a0834154b848d 100644
--- a/session_5/session_5.Rmd
+++ b/session_5/session_5.Rmd
@@ -1,16 +1,22 @@
 ---
 title: "R#5: Pipping and grouping"
 author: "Laurent Modolo [laurent.modolo@ens-lyon.fr](mailto:laurent.modolo@ens-lyon.fr)"
-date: "2021"
+date: "2022"
 output:
   rmdformats::downcute:
     self_contain: true
     use_bookdown: true
     default_style: "light"
     lightbox: true
-    css: "http://perso.ens-lyon.fr/laurent.modolo/R/src/style.css"
+    css: "../www/style_Rmd.css"
 ---
 
+```{r include=FALSE}
+library(fontawesome)
+``` 
+
+ `r fa(name = "fas fa-house", fill = "grey", height = "1em")`  https://can.gitbiopages.ens-lyon.fr/R_basis/
+
 ```{r setup, include=FALSE}
 rm(list=ls())
 knitr::opts_chunk$set(echo = TRUE)
@@ -78,8 +84,8 @@ Try to pipe operators to rewrite your precedent code with only **one** variable
 <p>
 ```{r pipe_example_b, include=TRUE}
 flights_md2 <- flights %>%
-    mutate(most_delay = min_rank(desc(dep_delay))) %>% 
-    filter(most_delay < 10) %>% 
+    mutate(most_delay = min_rank(desc(dep_delay))) %>%
+    filter(most_delay < 10) %>%
     arrange(most_delay)
 ```
 </p>
@@ -164,8 +170,6 @@ summ_delay_filghts <- flights %>%
   filter(dest != "HNL") %>% 
   filter(delay < 40 & delay > -20)
 
-  
-
 ggplot(data = summ_delay_filghts, mapping = aes(x = dist, y = delay, size = count)) +
   geom_point() +
   geom_smooth(method = lm, se = FALSE) +
@@ -395,4 +399,4 @@ flights %>%
 </p>
 </details>
 
-## See you in [R.6: tidydata](http://perso.ens-lyon.fr/laurent.modolo/R/session_6/)
+## See you in [R.6: tidydata](https://can.gitbiopages.ens-lyon.fr/R_basis/session_6/)