Articles box are sticked each other

Hello
This is my first post and I want to start authors of these beautiful theme.

My website is here : http://gvallver.perso.univ-pau.fr/?page_id=28

As you can see, several articles are sticked to the previous or the next one. I do not understand why and I do not know how to fix this ?

Here is a screenshot

I have also a strange behavior of text following the title :

Thanks for your help

• This topic was modified 10 years, 5 months ago by ladgalen.