title: Difference of 304 and 200 (from disk cache)
body: <p><strong>nginx version: nginx/1.14.0 (Ubuntu)</strong></p>
  
  <p>Trying to study how to deal with browser cache. </p>
  
  <p>Could you explain to me why in case of html the browser sent request to the server, whereas in case of css it didn't?</p>
  
  <p>In other words, why in case of html we have 304, but in case of css we have 200 (from disk cache)?</p>
  
  <p><a href="https://i.stack.imgur.com/EiL1u.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/EiL1u.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/IaZ9K.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IaZ9K.png" alt="enter image description here"></a></p>