Custom CSS Overwriting Css for entire site

so I am using your slider to have some pictures scroll across the top of the site, and on the right side it displays some of the most recent posts to the site. I wanted to make the text that shows up (as an overlay) to be all white.

I put the following code in custom css for this slide, but it changes the text color for any instance of news posts on my website, instead of just the slide info for this slider. Any help is appreciated!!

Class name: slider-ms-info

.slider-ms-info h2, a, div {color: #ffffff ;
font-weight: bold;
}