title: bootstrap scaffolding.less is changing default style.css
body: <p><a href="https://i.stack.imgur.com/CA4pP.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>I added a <strong>navbar</strong> called <em>stretchy-navigation</em> to the website. It has a lot of css and less files. it introduces miner changes to the body. Removing header fixes things, but i need the header. by the way, i add my header and footer with jQuery with "load" function.   </p>
  
  <p><a href="https://i.stack.imgur.com/X9uHJ.png" rel="nofollow noreferrer">enter image description here</a></p>
  
  <p>this is <em>stretchy-navigation</em> file structure.</p>