difference between roles and class

[marion]

I am new to Kendoui and have been setting up my own css sheet to modify minor elements of the the Kendo defaults and need to know the difference between roles and classes.  I am familiar to the concept of class from using html coding, but I am new to the concept of roles.  Could someone give an idiots brief to how the roles affect the layout and whether they can also be modified?
Many thanks

[Dimo]

Hi Marion,

Roles have no effect on layout. They are related to accessibility and WAI-ARIA. You don't have to use them unless you would like to benefit from data attribute widget initialization. The Kendo UI widgets render all required role attributes automatically.

Regards,
Dimo
Telerik

[marion]

Many thanks