如何用多个ID类型全局生效一个CSS类？

Hey there! I totally get how frustrating it is to spend 5+ hours troubleshooting a styling issue without making progress—great call reaching out for help. Let’s break down actionable steps to fix that uncooperative min-height problem:

• Check for CSS Priority Conflicts
  More often than not, your min-height: 100px rule is being overridden by a higher-priority selector. Open your browser’s DevTools, select the target question element, and look at the Styles panel—you’ll see your rule crossed out if it’s being overridden. To fix this:

  • Use a more specific selector (e.g., if your question cards live inside a container with class .question-section, use .question-section .question-card instead of just .question-card)
  • Temporarily add !important to test if it works (try to avoid this long-term, as it can create future specificity headaches: min-height: 100px !important;)

• Rule Out Browser Caching or Wrong File Edits
  Sometimes your updated CSS isn’t even loading—browsers love hanging onto cached old files. Try a hard refresh (Ctrl+Shift+R on Windows/Linux, Cmd+Shift+R on Mac) to clear the cache. Also double-check that you’re editing the exact CSS file linked to your page; accidentally modifying an unused backup or duplicate file is an easy slip-up!

• Verify if Spacing Comes From Other Properties
  That big gap between questions might not actually be from min-height at all. Check the element’s box model in DevTools: look for unexpected margin, padding, or if a parent container uses gap (for flex/grid layouts). You might need to adjust those properties instead of min-height to shrink the spacing.

• Confirm Your Selector Targets the Right Element
  Make sure your CSS selector is correctly matching the question elements. Dynamic frameworks (like React, Vue) sometimes generate auto-generated class names, or you might have a typo in the class/id name. Right-click the question element in DevTools, select Copy > Copy Selector, and paste that into your CSS to ensure you’re targeting the exact element.

Hope these steps help you get that spacing sorted out!

内容的提问来源于stack exchange，提问作者Chris