To make the columns full width of the container, Update this option: http://prntscr.com/jf4w84
Moreover, please add the CSS below for the border left of the button:
.price-details--item.head + div .body:nth-child(1) .content .action-btn {
margin-left: -1px;
border-left-width: 1px;
}
.price-details--item.head + div .body:nth-child(2) .content .action-btn {
border-left-width: 0;
}
Best Regards,
ThemeLooks Support Team