add

js/global.js

@@ -68,7 +68,7 @@
 
       $(document).on('click', '.customerBtn', function (event) {
         event.preventDefault();
-        var cooperationPosition = $('.cooperation').offset().top;
+        var cooperationPosition = $('.cooperation').offset().top-150;
         $('html, body').animate({
           scrollTop: cooperationPosition
         }, 'slow');