To configure your Banner/Post Slider, please go to Dashboard > Appearance > Customize> Blog Homepage>Banner/Post Slider.

In Blog Homepage, you can find different options and for Banner/Post Slider click on option which will take you to controls of Banner/Post Slider.

In Banner/Post Slider option select Banner which will drive you to banner section and helps to edit banner section.

There you can adjust height of banner as per need. Select image of your desire and can change image size.

Options like Title Color and Subtitle Color is also provided which will help to change Banner Title color and Sub Title color respectively.

In Banner/Post Slider option select Slider which will drive you to banner section and helps to edit banner section.

There you can adjust height of Slider as per need. Select image of your desire and can change image size. Choose Category option will help to select post category.

Options like Post Title Color and Post Subtitle Color is also provided which will help to change Banner Title color and Sub Title color respectively. Slider Background color can also be set.