网页背景图片无法显示求助：多端排查无果，求错误原因

Hey there! Let's figure out why your background image isn't loading—this is a super common issue, so we'll walk through the most likely fixes step by step.

First, let's recap your code for reference:

CSS Code #

.section--map { 
  padding: 40px 0; 
  background: #e6e6e6 url("../images/map-bg.jpg") center no-repeat; 
  -webkit-background-size: cover; 
  background-size: cover; 
}

HTML Code #

<section class="section section--map"> 
  <div class="container"> 
    <div class="map"> 
      <div class="map__title"> 
        <div><i class="fas fa-map-marker-alt"></i></div> 
        <a href="https://goo.gl/maps/XmN4jh6RPPij7qy46" target="_blank"><h2>Open Map</h2></a> 
      </div> 
    </div> 
  </div> 
</section>

Now here are the top issues to check:

• Incorrect File Path
  This is the #1 reason background images fail. Double-check that the path ../images/map-bg.jpg matches your actual file structure. For example:

  • If your CSS file lives in css/style.css, ../ moves up one level to the root directory, so your image should be at root/images/map-bg.jpg.
  • If your images folder is inside the same directory as your CSS file, you'd use images/map-bg.jpg (no ../).
  • Test by typing the full image URL directly into your browser's address bar—if it doesn't load, the path is wrong.

• File Name/Case Sensitivity
  Make sure the image file is named exactly map-bg.jpg (capitalization matters on Linux/Unix servers—Map-Bg.jpg won't work if your CSS uses lowercase). Also confirm the file exists in the correct folder and isn't corrupted.

• CSS Specificity or Conflict
  Check if another CSS rule is overriding your background style. Open your browser's DevTools (F12), select the .section--map element, and look at the Styles panel. If your background property is crossed out, a more specific selector (like body .section--map) or a later rule is overwriting it.

• Element Height Issues
  If your .section--map element doesn't have enough height, the background image might not be visible. Even with padding: 40px 0, if the inner content is collapsed, the element's height could be too small to show the background. Try adding a temporary min-height: 200px to the .section--map class to test if the image appears.

• Rare Browser Compatibility Edge Case
  You've already tested multiple browsers, but just in case: background-size: cover is supported in all modern browsers, but if you're targeting extremely old ones (like IE8), it won't work. But given your testing, this is unlikely to be the issue.

内容的提问来源于stack exchange，提问作者Oleg Gribanov