How to center Contact info in mobile

in http://ahcc.wpx.me we have added a book now button which only shows in responsive and is still part of the contact info area, how can we make it centered and reduce the space between the Tap to Call button. Thank You

 

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

@media only screen and (max-width: 480px){
.header .contactinfo a img {
margin-left: 50px!important;
}
}

 

Thank you very much