You’re welcome, Gaelle. Just note that what we did here (writing custom HTML) is not something that we could continue on doing here. Custom coding is outside the scope of our support.
The code my colleagues gave you serve only as a guide. You are now responsible to fix issues in that code and further enhancement. If you have a tight deadline for your project and you still haven’t learned HTML, you will need to hire a third party developer to do it for you. You now know where to put code in the Topbar area. That is our goal here and that is achieved.
If you need more layout flexibility in the header without custom coding, please consider upgrading to Pro.
Thanks.