Describe the bug
Columns style issue

To Reproduce
Steps to reproduce the behavior:

1. create 3 columns and fill image
2. create 4 columns and fill image
3. for 3 columns, the lasd child still has style margin-right: 32px;

Expected behavior
Should be same as 4 columns

Screenshots

Desktop (please complete the following information):

• all

Smartphone (please complete the following information):

• unknow

Additional context
@media (min-width: 600px) {
.wp-block-column:nth-child(odd) {margin-right: 32px}
/should be/
.wp-block-column:nth-child(odd):not(:last_child) {margin-right: 32px}
}