Image slider – slide text is cropped on mobile devices

The slider images are correctly sized when viewed on a desktop browser, or tablet. However on a mobile device (android), images are resized and looked cropped… that’s still ok, as it works for the images I chose.

However the slide text is cropped as well on mobile devices, which is a pity.
I read the other topics, but could’nt find how to resolve this particular issue.
Is there a way to make the slide text somehow smaller on mobile devices to fit in the width of the slider?

Could you help?