How to increase slideshow size for mobile (Debut theme)

[persuasion]

On desktop the slideshow is the correct size (slide height = small). However, I would like the slide show size to be larger, and cover more of the mobile site front page. How do I achieve this? 

[Pallavi]

Hello There,

add code assets/theme.scss.liquid bottom of the file

@media only screen and (max-width:767px) {
.slideshow--medium {height: 650px;}
}
Hope this will work for you.

Thanks!