Issues with CSS

Hi

I know that this goes beyond the scope of the GP support so I understand if you can not help, but I thought it would be a quick problem solving for CSS wizards like you :-)

I had a web designer that I unfortunately cannot get in contact with any longer. He developed CSS for Calculated Fields Forms which created a checkbox design for radio button images (i.e. orange border at hover, orange checkbox at click on the image etc.) (example https://www.screencast.com/t/Or5FOO4sVPk) which I would like to move to a different site.

Is it possible that CSS can be located elsewhere on the site than 'Additional CSS'? Because I have tried to follow the exact same code etc.

I have tried copying the whole 'Additional CSS' file from test site to the non-test site to no avail as well as use the extra CSS (i.e. .custom_csss) for the radio buttons:

#fbuilder .customm_csss .two_column
{
    float: left;
    width: 23%;
    position: relative;
    margin: 15px 1%;
    border: 1px solid #d3d3d3;
    padding: 8px 8px 2px 8px;
	min-height:225px;
}
#fbuilder .customm_csss .two_column.hello
{
    border: 1px solid #d16800;
}
#fbuilder .customm_csss .two_column label 
{
    display: block;
    position: relative;
    padding-left: 0;
    margin-bottom: 0;
    cursor: pointer;
    font-size: 22px;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}
#fbuilder .customm_csss .two_column label input
{
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}
#fbuilder .customm_csss .two_column span.checkmark {
    position: absolute;
    bottom:-12px;
    left: 50%;
    height: 20px;
    width: 20px;
    background-color: #fff;
    z-index: 99;
	border: 1px solid #d16800;
    border-radius: 100%;
    transform: translate(-50%, -50%);
}
#fbuilder .customm_csss .two_column label:hover input ~ .checkmark 
{
  background-color: #d16800;
}
#fbuilder .customm_csss .two_column label input:checked ~ .checkmark 
{
    background: #d16800 !important;
}
#fbuilder .customm_csss .two_column label input:checked ~ .checkmark:after 
{
    display: block;
}
#fbuilder .customm_csss .two_column span.checkmark:after 
{
    content: "";
    position: absolute;
    left: 6px;
    top: 3px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    -webkit-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    transform: rotate(45deg);
    display: none;
}
#fbuilder .customm_csss  .two_column span img
{
    width: 100%;
    margin: 0 auto;
	position:relative;
	z-index:1;
}
#fbuilder .customm_csss .two_column span small
{
    position: relative;
    bottom: -26px;
    left: 0;
    right: 0;
    margin: 0 auto;
    color: #000;
    font-size: 14px;
    font-weight: 600;
    text-transform: inherit;
    letter-spacing: 1px;
    z-index: 1;
    padding: 0 10px;
    border: none;
    display: block;
    width: 90%;
    text-align: center;
    background: transparent;
}

.cp_cff_pastel #fbuilder .pbPrevious{
    background: #3f8823 !important;
	border:1px solid #3f8823 !important;
}
.cp_cff_pastel #fbuilder .pbNext{
    background: #3f8823 !important;
	border:1px solid #3f8823 !important;
}
#fbuilder .custom_label_input input {
    font-weight: 700 !important;
    text-decoration: underline;
    line-height: 38px;
    background: transparent !important;
    box-shadow: none !important;
    color: #000 !important;
    font-size: 21px !important;
}
#fbuilder .custom_label_input .dfield {
    display: inline;
}
#fbuilder .custom_label_input label {
    display: inline-block;
}
#fbuilder .custom_button_green  input{
    background: #3f8823 !important;
	border:1px solid #3f8823 !important;
}
#fbuilder div.cpefb_error{
	position:relative !important;
}
.cp_cff_pastel #fbuilder .pbEnd .pbPrevious {
    background-color: #c1c1c1
!important;
		border:1px solid #c1c1c1 !important;
}
/********  Responsive  ********/

@media screen and (max-width:1366px)
{
}
@media screen and (max-width:1280px)
{
}
@media screen and (max-width:1199px)
{
#fbuilder .customm_csss .two_column
{
    width: 31%;
    margin: 15px 1%;
    min-height: 240px;
}
}
@media screen and (max-width:991px)
{
#fbuilder .customm_csss .two_column
{
    width: 31.33%;
    margin: 15px 1%;
	min-height: 255px;
}
}
@media screen and (max-width:767px)
{
#fbuilder .customm_csss .two_column
{
    width: 48%;
    margin: 15px 1%;
	min-height:310px;
}
}
@media screen and (max-width:667px)
{
}
@media screen and (max-width:480px)
{
#fbuilder .customm_csss .two_column 
{
    float: none;
    width: 100%;
    margin: 15px 0;
    min-height: 330px;
}
input#fieldname17_1
	{
    white-space: pre-wrap;
    padding: 10px;
    font-size: 14px;
    line-height: 18px;
    margin-bottom: 20px;
}
.tablepress {
   overflow-y: hidden;
   display: block;
}
}
@media screen and (max-width:380px)
{
#fbuilder .customm_csss .two_column 
{
    float: none;
    width: 100%;
    margin: 15px 0;
    min-height: 295px;
}
}
@media screen and (max-width:330px)
{
#fbuilder .customm_csss .two_column 
{
    float: none;
    width: 100%;
    margin: 15px 0;
    min-height: 235px;
}
}