Hello,
It appears your theme has changed the column container’s CSS display property from the default display: flex to display: grid, that’s why the width option is not working, as the flex-basis which WordPress uses to set the width of each column only works with flex, not grid.
To fix this, place this CSS code in APPEARANCE => CUSTOMIZE => ADDITIONAL CSS.
.wp-block-columns {
display: flex !important;
}Good luck!
@gappiah
Thank you, it worked.
