Layer Slider is not wrapping text inside the containing box

In the Venus Layer Slider, when I create a text element, and give it a default style like big-orange, the text does not contain itself within the bounding container.
I want the text to wrap onto three lines.
This all looks great in the editor, but when I preview the live page, the text does no wrap at all and fall off the right hand side of the screen.
Can you help please?