Sharepoint list webpart with links, how to add separator or header?

Question

I'm trying to understand how to add a separator or header in list webpart from sharepoint (I think running 2013 version)

I got this :

And I want a "separator " like communities or other links :

I haven't access to sharepoint designer :(

It's a list webpart, but if I need to go on content editor to add some HTML code why not.

I have tried to use the 'group' function but it's really ugly

Answer 1

You could custom SharePoint list view by CSR.

Check here for CSR guideline

One thread for your reference.