Vertical line between columns

Hello!
I am a beginner.
Looking for answers on the internet, but no one really helped.
How can I create vertical lines between two columns?
I use “Column Shortcodes” plugin for making the column.
What should I write in the middle to get a vertical line?
Maybe I should use some another plug-in?
Column code:
[one_half]
Text
[/one_half]

[one_half_last]
Text
[/one_half_last]

What would be the recommendations?
Thanks in advance for the answers!