Each column on your website can be resized. This allows you to make columns either thinner or wider. To resize the column you have to take the border of the column and drag it left or right until it reaches your desired size (see screen shots below for examples on how to add and adjust spacing).
In the image below we see an example of resizing by clicking over the BORDER of the ITEM to resize it.
Note: You can also ADD a SPACE item or even a TEXT item to create space.