FontAwesome Checkbox CSS

gistfile1.txt

#gform_wrapper_192 ul.gfield_checkbox li input[type=checkbox], #gform_wrapper_192 ul.gfield_radio li input[type=radio] {
  visibility: hidden;
  margin: 0;
  width: 0!important;
}

#gform_wrapper_192  input[type=checkbox] + label, 
#gform_wrapper_192  input[type=radio] + label { font-size: 20px; }
input[type=checkbox] + label:hover, input[type=radio] + label:hover { cursor: pointer; }
input[type=checkbox] + label:after, input[type=radio] + label:after {
  font-family: "ETmodules";
  font-size: 20px;
  position: relative;
  margin-right: 0.7em;
}

#gform_wrapper_192 li.gf_list_inline ul.gfield_checkbox li, #gform_wrapper_192 li.gf_list_inline ul.gfield_radio li {
  display: -moz-inline;
  display: inline;
}



#gform_wrapper_192 input[type=checkbox] + label:before { 
content: '/f00c'; 
}

#gform_wrapper_192 input[type=checkbox] + label:hover:before { 
content: '\f046'; 
filter: alpha(opacity=20); 
opacity: 0.2; 
}

#gform_wrapper_192 input[type=checkbox]:checked + label:before { 
content: '\f046'; 
}

#gform_wrapper_192 input[type=checkbox]:checked + label:hover:before { 
filter: alpha(opacity=100); 
opacity: 1; 
}

Change line 11 to (this is the main problem - you're still calling the Divi font):
font-family: "FontAwesome";

Also, change all content calls to use quotes: " and start with a backslash: \ . So 25 should be:
content: "\f00c";