Zerif lite theme's CSS not working for width greater than 1190px

I am using Zerif lite theme not the pro version. but the problem is all the css written in style.css file are not working for width more than 1190px.
This is strange but i checked the inspect element and it showed me
@media screen and (max-width: 1190px).
And then when i checked the style.css file this line was not there where it supposed to be.
so where should i make changes so that i can get the css for whole screen.