title: React application working on desktop but showing a blank page on mobile
body: <p>This issue has nothing to do with <a href="https://stackoverflow.com/questions/39826101/react-application-works-on-desktop-but-on-mobile-a-blank-page-is-shown">this post</a>.</p>
  
  <p>I built a full-stack application using create-react-app, Express, and MongoDB. <a href="https://project-pyrope.herokuapp.com/" rel="noreferrer">As you can see</a>, I successfully deployed it on Heroku (no errors in the log). The root ("/") page is supposed to be empty for now.</p>
  
  <p>The problem arises when I try to access the application with my phone (iPhone 5s): I get this blank page, whether I am using Chrome, Firefox, or Safari:</p>
  
  <p><a href="https://i.stack.imgur.com/w7PtT.png" rel="noreferrer"><img src="https://i.stack.imgur.com/w7PtT.png" alt="Blank page on iPhone 5s"></a></p>
  
  <p>I should be able to see the navbar, even though the page has no content. A friend of mine uses an Android phone, and he got the same result.</p>
  
  <p>It doesn't seem like there's a problem with the responsiveness since I can see the navbar with Chrome's developer tools:</p>
  
  <p><a href="https://i.stack.imgur.com/0JaQB.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0JaQB.png" alt="enter image description here"></a></p>
  
  <p>Any idea?</p>