decrease slider height

I would like to decrease the slider section to 200 px, but keep the width.
What is the easiest way to do that?

 

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

 #slides {
height: 280px;
}
 
.slides_container a img {
height:280px;
}
.slides_container {
height: 280px;
}
.slider-wrapper {
height: 280px;
}