I\'m currently working on a website where I need to put some images and some heading and description will be going along with it. If the browser is full screen, the heading
Bootstraps use css media queries to do that. Here is the documentation from bootstrap: http://getbootstrap.com/css/#grid-media-queries And here's a crash course in media queries: http://net.tutsplus.com/tutorials/html-css-techniques/quick-tip-a-crash-course-in-css-media-queries/
To achieve what you want, you need to write something like this in your application.css.scss:
@media (min-width: @screen-md) {
h1{font-size: 14px}
}