Ok So I am making a 2.0 version of a my website and completely re-designing the layout I have brought in bootstrap because what I mainly want to do is make the website mobile friendly so basically what I'm trying to do is something along the lines of this and done in php
if(browser-width < 600px && browser-width > 100px) {
<div class="mobileHeader">stuff here</div>;
}elseif(browser-width > 700px) {
<div class="sidebar">stuff here</div>;
};
I hope this makes sense I have been trying to figure this out for awhile to no avail.