I'm trying to figure out how to make my underline type borders for k-textbox work for the datepicker, numeric textbox, and combobox but can't seem to find the right css classes to override. Please see attached image for what I'm trying to accomplish. Can someone point me in the right direction?
I would recommend that you inspect the rendered HTML to see what rules are applied to which element, so you can devise rules of your own that create the required appearance, and override the built-in ones. The following blog post can help you in doing that: https://www.telerik.com/blogs/improve-your-debugging-skills-with-chrome-devtools.
I'd also recommend you start with the SASS Material theme, as it already has a similar appearance in keeping mostly the bottom border of inputs.
Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers.Learn More.