Here is the list of most commonly used multi column values, they are:
column-count : Used to count the number of columns that element should be divided
column-fill : Used to decide, how to fill the columns
column-gap : Used to decide the gap between the columns
column-rule : Used to specifies the number of rules
rule-color : Used to specifies the column rule color
rule-style : Used to specifies the style rule for column
rule-width : Used to specifies the width
column-span : Used to specifies the span between columns
