Blockslider offers a bunch of designing/customization controls. This documentation covers how you can start customizing block sliders according to your design needs.
Responsive Design
Almost all design controls support responsiveness. Here’s a quick article explaining how you can use a responsive control
Design Elements

Almost all design options are organized into three basic elements, that are:
- Wrapper: Applies on the main slider wrapper/container
- Slides: Applies on every slide
- Current: Applies on the currently active slide
You can design every other design element regardless you’re on a slide or slider.