Change border color for each item (Accordion layout)

CSS Codes FAQ
1

Add this code to the Custom CSS field on the Appearance tab of your FAQ widget’s settings:

.eapps-faq-content-category-items:after {
border-color: red!important;
opacity: 0.5;
}
.eapps-faq-content-category-item:after {
background-color: red!important;
opacity: 0.5;
}