Transparent background of "Share" button

Template which I used have a "share" button, but when I click to it background of "add this" is transparent, and I need to be any color. This is screnshoot.



I guess I should change the color in the CSS, but I'm not sure about code position.
Please help

Hi,

Invasion?

Add this to CSS and insert your color codes

Code:

#at15s {
    background-color: #your color code here;
}
.popmenubutton a {
    background-color: #your color code here;
}
.at15t {
    background-color: #your color code here;
}

It works! Thank you very much!

Welcome.

Solved ~ Locked