You can reduce the size of any snippet block from the default 100% available width to a custom width, and align center, left, right either by drag-drop or by settings in the Style Editor popup.
You can set a specific width for your snippet block by setting the max-width value in the Style Editor Popup. To access the Style Editor, click the red COG icon that shows top-left above the snippet block.
1. Click the red COG icon to launch the Style Editor
2. Choose a value from the MAX WIDTH setting.
3. Once set an alignment option will appear allowing you to set the horizontal alignment.
You can resize a column by hovering near the edge of the column to bring up a drag-resize cursor.
Dragging horizontally with this cursor will increase or decrease the size of the column, changing the size of the column next to it to fit.
Choosing a column and direction to expand.
Column sizing after resize.
You can add spacing between each Column without changing the Columns padding settings via the COLUMN GAP setting property.
The Column Gap Setting can be found in the SIZE AND SPACING tab when editing the row element.
You can also get there from the main Style Editor screen by clicking the current Column Gap value e.g. 36px in the screen to the right.