title: Will Bootstrap still load hidden responsive classes?
body: <p>I'm trying to optimise my website so it also displays nicely on mobile. 
  Now in order to do so correctly or so it looks nice, I will need to show for example an image on a different place on the mobile view.</p>
  
  <p>Now I add the class .hidden-xs and .visible-xs on one of each place where I need to have the same image. </p>
  
  <p>The question is, since I now call the image twice from the database will my browser load the page slower?</p>
  
  <p>If this is the case, how can I solve this problem then?</p>