Social Media Icons in Zeal template

Hello,

I am using the Zeal template which shows 3 social media icon in the footer by default.
I have added a 4 icon (custom link to the menu), but the problem starts here: 1) The icon is positioned in a new row, although there is plenty of space to the right of the 3rd icon. 2) All other icons have a rectangle frame around it, but it's missing for the new social media icon?

Any help would be appreciated.

Thanks,
Marcus