如何为外部库添加自定义CSS？Bootstrap轮播箭头宽度修改求助

Hey there! I’ve dealt with this exact frustration before—Bootstrap’s default styles can be stubborn to override, but there are a few straightforward fixes to get your custom arrow widths working.

Why Your Custom CSS Isn’t Working #

Bootstrap’s native carousel.scss styles have higher specificity than basic custom selectors, or your style.css might be loaded before Bootstrap’s CSS file (so the library styles overwrite yours).

Step-by-Step Solutions #

• Load your custom CSS after Bootstrap
  First, double-check the order of your CSS imports in your HTML. Make sure style.css comes after Bootstrap’s CSS file to ensure your styles take precedence:

  <link rel="stylesheet" href="path/to/bootstrap.css">
  <link rel="stylesheet" href="path/to/style.css">
  

• Use more specific CSS selectors
  Boost the specificity of your rules to beat Bootstrap’s default styles. Target the arrow controls with a parent class or your carousel’s custom ID:

  /* Target arrows with the carousel parent class for higher specificity */
  .carousel .carousel-control-prev,
  .carousel .carousel-control-next {
    width: 50px; /* Adjust to your desired width */
  }
  
  /* If your carousel has a custom ID, use that for even higher specificity */
  #my-custom-carousel .carousel-control-prev,
  #my-custom-carousel .carousel-control-next {
    width: 50px;
  }
  

• Use !important as a last resort
  If the above doesn’t work (and only if you’ve exhausted other options), you can add !important to force your style to take precedence. Note: This should be a last fix since it can make future style debugging harder.

  .carousel-control-prev,
  .carousel-control-next {
    width: 50px !important;
  }
  

• Verify with browser dev tools
  Right-click the arrow and select "Inspect" to open your browser’s developer tools. Check the "Styles" tab to see which rules are being applied to the arrow. You’ll be able to spot if your custom style is crossed out (meaning it’s being overridden) and adjust your selectors accordingly.

内容的提问来源于stack exchange，提问作者OL12_9