Hi Dek Ery,
Thanks for your response.
I understand why you can’t give me which plugin needs to be installed but i would like to know why i can’t customize my share button.
On post blog (masonry theme), by default we have 4 share buttons : twitter, facebook, pinterest, google+
In my case, i dont have the Twitter share button and i dont know why.
If you can explain to me how to add twitter share button, i will be able to add linkedin share button.
Thanks for your help