Width and responsive
This option sets the slider in responsive mode. That means that it will resize the entire container dynamically related to the width. Note that for this to work the width must also be set to percentage, f.ex 100%.
In other words you can set the width to 100% and the slider will follow these proportions as the window resizes.
One of the most important features of this slider is the container height option.
You can set an exact value, f.ex 400, and it will apply this exact height in pixels. You can also set a relative ratio value which is anything below 2, f.ex 0,56 (which is the relative 16/9 ratio).
If you set a relative ratio value the slider height will be calculated by multiplying this value with the width at any given scaling process.