Removing most meta info and "/" (keep date info) under image on blog elements

Hi guys,

First of all, I’ve to tell you that you rock!!! Enfold theme is awazingly cool to use!! I’ve already bought it twice for clients in differents business. I also really appreciate all updates and improvement you often do, thank!!!

Please have a look to my last website (almost finished) here.
And please have a look at ACTUALITES (news/blog part)

On that page, i have set up the blog style (in enfold) as “use the advance layout editor to built”
and the single post is with big preview.
I also set up the blog meta elements : thicked on the blog post date

So on all blog element, below the post image I just want the date of the post and no other meta, but I don’t want any “/” to be displayed.
Even when I add (in quick css):
.blog-author{ display: none !important; }
.blog-categories{ display: none !important; }

It still display “/” so I have something like: 14 february / /
which is not very beautiful ;o))

I’d like to add only quick css instead of going through ftp in order to make your theme’s updates whitout changing the code each time.

Do you understand my problem?

Thanks in advance Guys!!

Cédric