Hi There,
In this issue, you could use the example custom CSS below to make the first item of the table content bold, change the background color and text color that will look like the header of the table.
.price-details--item.head .content li:first-child,
.price-details--item.body .content li:first-child {
font-weight: bold;
background-color: #ff4719;
color: #fff;
}
Best Regards,
ThemeLooks Support Team