You can try:
Select the Table Block and give it an Advanced > Additional CSS Class(s) of comparison-table then you can style the last column in the table:
/* Style link in last column */
.comparison-table tr td:last-child a {
/* last link styles here */
}
.comparison-table tr td:last-child a:hover {
/* last link hover styles here */
}
I notice the link has inner span that has an inline text-decoration property, if you need to remove that then you would use this CSS
/* remove inline text decoration */
.comparison-table tr td:last-child a,
.comparison-table tr td:last-child a span {
text-decoration: none !important;
}