If you put the a inside all the tds and have the a fill the entire space it will give you that behaviour. Otherwise you can do it on the tr with javascript. I imagine you’ll want to pass the contact’s id or something to the showContact though.

<%= for contact <- @contacts do %>
    <tr id={"contact-#{contact.id}"}>
      <td><%= link contact.first_name, to: Routes.contact_path(@conn, :show, contact) class: "css to make it full height & width... display: block?" %></td>
      <td><%= link contact.last_name, to: Routes.contact_path(@conn, :show, contact) class: "css to make it full height & width... display: block?" tabindex: "-1" %></td>
    </tr>
<% end %>