diff --git a/external/lab-hsa/ppe/ppe.md b/external/lab-hsa/ppe/ppe.md
index 7995fb4d63856b53306dbeece9a810469144d055..755be100b6ae7427b10778b90bc77af00023dd08 100644
--- a/external/lab-hsa/ppe/ppe.md
+++ b/external/lab-hsa/ppe/ppe.md
@@ -24,7 +24,7 @@ for wearing the approriate PPE that will vary depending on the hazards present i
 
 <div align="center">
 <img src="img/Gloves1.png" width="20%">
-<div>
+</div>
 
   Not sure which glove to use? **Consult the chemical's Safety Data Sheet (SDS) or the [safety officer](https://service.uni.lu/sp?id=sc_cat_item&sys_id=f140d745dbe83c905c72ef3c0b96194e&sysparm_category=cca7f2c1db683c905c72ef3c0b961940) for guidance.**
 
@@ -38,7 +38,7 @@ Change both gloves between different lab levels (BSL-1 or BSL-2)
 
 <div align="center">
 <img src="img/Gloves2.png" width="20%">
-<div>
+</div>
 
 Do not touch the door handle or the elevator button with your gloves!
 
@@ -47,7 +47,7 @@ Exception is done for the doors marked by this sign:
 
 <div align="center">
 <img src="img/Gloves3.png" width="20%">
-<div>
+</div>
 For Microscopes, computers and keyboard: stickers on the instruments indicates if gloves are required.
 
 Important: