Feature Request - list column wrap

[pbstudent]

Description

Create bulleted lists wrapping into two columns for all web browsers.

Expected behaviour

Two or more columns based on presets.

Actual behaviour

N/A

Steps to reproduce the problem

reference: https://stackoverflow.com/questions/6509106/is-there-a-way-to-break-a-list-into-columns#
ul {
-moz-column-count: 2;
-moz-column-gap: 20px;
-webkit-column-count: 2;
-webkit-column-gap: 20px;
column-count: 2;
column-gap: 20px;
}

ul ul {
-moz-column-count: 1;
-moz-column-gap: 20px;
-webkit-column-count: 1;
-webkit-column-gap: 20px;
column-count: 1;
column-gap: 20px;
}
Produces:

Bulleted lists only works in FireFox.

System Information

• Textbooks for Pressbooks: 4.1.1
• Pressbooks: 5.4.0
• WordPress: 4.9.7