iotaCSS allows you to fully customize all classes based on your needs. Assuming you would like to change the syntax of
the classes from .u-uppercase to u-upper. To do this, you should update the namespace classes:
Enable responsive transform utilities
By enabling the responsive transform utilities, you have access to a set of utility classes which bind to breakpoints. By
default, they bind to the iotaCSS global breakpoints specified in Settings.Core.
Heading uppercase on mobile and lowercase on tablets and up.
Set breakpoints only for transform utility
In case you would like to use different breakpoints to transform utility only, you should use the local variable.