Remove Tap to call on mobile site

Hello, I need help on the following website http://cms.cc-sulingen.de

1. When I go to the Website on a mobile device, I got a Tap to call button. How can I remove this button?
2. Also on the mobile device website I want to rename the "PAGES NAVIGATION MENU" to "MENU"

 

Hello,

1.

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

Code:

.call-us a.btn {
display: none;
}
 

2. Go to header.php present in your theme directory and follow the instruction as show in image given below





Thanks & Regards
Gourav Shrivastava