How to add border in a klaviyo template?

Welcome to the community @Daleee64 

You can approximate this with Klaviyo’s editor by using a section (with text and a button) and adding a border to the section. However, that adds the left/right border at the width of the email. So you won’t have the spacing on either side

Alternatively, you add a table with two rows to get exactly what you want. In row one, add your text, and in row 2 add your own, uploaded button image. Then, style the table to have a blue border. See example below.

Hope that helps

Andy