.success-value {
    border-color: #0f0;
    color:#fefefe;
}
.invalid-value {
    border-color: #f00;
    color: #f00;
}
.form_radio_btn {
    display: block;
}
.form_radio_btn input[type=radio] {
    display: none;
}
.form_radio_btn label {
    display: inline-block;
    cursor: pointer;
    padding: 0px 15px;
    line-height: 34px;
    border: 1px solid #999;
    
    user-select: none;
    width: 100%;
    margin-right: 0;
    margin-left: 0;
    margin-bottom: 1rem;
    background-color: #767676;
    color: #fefefe;
}

/* Checked */
.form_radio_btn input[type=radio]:checked + label {
    background: #3adb76;
    color: #3b3b3b;
}
.form_radio_btn input[type=radio]:checked + label::before {
    font-family: "Font Awesome 5 Free"; 
    font-weight: 900;
    content: '\f00c';
    margin-right:1rem;
}

/* Hover */
.form_radio_btn label:hover {
    background-color: #5e5e5e;
    color: #fefefe;
}

/* Disabled */
.form_radio_btn input[type=radio]:disabled + label {
    background: #efefef;
    color: #666;
}