I'm imitating the blog page in Umbraco starter kit. I found that it does not add a < div class="row" > tag for each row. Instead, all the columns are included in one row.

I'd like to put three columns in each row, so that I need to add < div class="row" > at the beginning of the column of that row, and then add < /div > at the 3rd column of that row.

I cannot dynamically generate html tag such as