Wrong class - Chapter 6

[Rahmon]

On chapter 6 page 68/69, divs.columns has two is-*-tablet class:

Shouldn't be "is-12-mobile" instead of "is-12-tablet is-6-tablet" or maybe just "is-6-tablet is-4-desktop?

new.customer.html:

• bulma-book-code/html/new-customer.html

  Line 160 in 95ac3df

  <div class="column is-12-tablet is-6-tablet is-4-desktop">

• bulma-book-code/html/new-customer.html

  Line 167 in 95ac3df

  <div class="column is-12-tablet is-6-tablet is-4-desktop">

• bulma-book-code/html/new-customer.html

  Line 174 in 95ac3df

  <div class="column is-12-tablet is-6-tablet is-4-desktop">

edit.customer.html:

• bulma-book-code/html/edit-customer.html

  Line 160 in 95ac3df

  <div class="column is-12-tablet is-6-tablet is-4-desktop">

• bulma-book-code/html/edit-customer.html

  Line 167 in 95ac3df

  <div class="column is-12-tablet is-6-tablet is-4-desktop">

• bulma-book-code/html/edit-customer.html

  Line 174 in 95ac3df

  <div class="column is-12-tablet is-6-tablet is-4-desktop">