How to add the boxes in the enclosed image 
Autor: Jk_21 N.
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How to add the boxes as shown in the enclosed image in my website?
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have you checked this post?
https://helpcenter.websitex5.com/es/post/159924
and maybe the help file?
http://help.websitex5.com/en/v13/pro/aspetto_riga_ht.htm