Limit characters in Featured Slider?

I realize that the homepage featured slider text picks up from the page(s) it's referencing. I'm wondering if there is a way to limit the amount of characters in the featured slider box? In a perfect world, the slider section in the customization area would provide an input box for specific text to be displayed below the name of your page. Such as: SHOP <name of actual page> "Please visit our online store for merchandise!" Instead, I have to make sure that the first lines of text on the actual page make sense enough to also be displayed on the front page slider. And when they are already on the SHOP page, it would make no sense to have "Please visit our online store for merchandise!" showing at the top. Any CSS code I can use, please? Thanks.