Product Item detail Excerpt Help

Site URL: https://www.jspfinearts.com

Hi everyone. I have this code that I've been trying to modify. I want to add a linked text underneath the Accepted Credit Card Logos to a blog post within my site, but I cannot figure out the right code for it. Please help me. 
Thanks in advance 🙂

-Johan 

.ProductItem-details-excerpt:after {
  display: block;
  content: "";
  height: 100px;
  margin-top: 34px;
  background: url('https://images.squarespace-cdn.com/content/v1/591c7c032e69cfd2a044b93f/9eaee896-b9e1-4e65-aba1-4484ed5e7d40/stripe-badge-transparent.png?format=1000w');
  background-size: contain;
  background-repeat: no-repeat;

 
  
}

Add a Size Chart text only or size chart link + click link >> show lightbox?