Hi, thanks for your reply. Actually, I successfully removed the underline by adding “border: none;” in .addtoany_list a in the style.css of the child theme:
.addtoany_list a {
display: inline-block;
font-size: 16px;
padding: 0 4px;
vertical-align: middle;
border: none;
}
I only have very basic understanding of css coding, so I am not sure if this is the best practice. Let me know if you suggest a better coding. Thank you.