要?jiǎng)?chuàng)建磨砂玻璃效果，需使用 backdrop-filter 屬性對(duì)元素背后內(nèi)容進(jìn)行模糊處理，并結(jié)合半透明背景實(shí)現(xiàn)；1. 使用 backdrop-filter: blur(10px) 或 -webkit-backdrop-filter 兼容 Safari；2. 設(shè)置 background-color: rgba(255, 255, 255, 0.1) 實(shí)現(xiàn)透明感；3. 添加 border-radius: 12px 和 border: 1px solid rgba(255, 255, 255, 0.2) 增強(qiáng)玻璃外觀；4. 可選 box-shadow 提升層次感；5. 確保容器有背景內(nèi)容且定位正確；6. 通過(guò) @supports 查詢提供漸進(jìn)增強(qiáng)支持；該效果在現(xiàn)代瀏覽器中表現(xiàn)良好，但需注意性能與適度模糊以保持視覺(jué)真實(shí)。

To create a frosted glass effect using the CSS backdrop-filter property, you need to apply a blur to the area behind an element, while keeping the element itself semi-transparent. This mimics the look of frosted glass — letting content show through with a soft blur and slight tint.

Here’s how to do it effectively:

? Key CSS Properties

The main properties you’ll use:

• backdrop-filter: blur(...): Blurs the content behind the element.
• background-color with transparency (e.g., rgba() or hsla()): Makes the element see-through but slightly opaque.
• border-radius: Softens edges for a more realistic glass look.
• Optional: box-shadow for depth.

? Basic Frosted Glass Example

.frosted-glass {
  /* Blur the background */
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);

  /* Semi-transparent background */
  background-color: rgba(255, 255, 255, 0.1);

  /* Visual enhancements */
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);

  /* Ensure content is visible */
  padding: 20px;
  color: white;
  font-family: sans-serif;
}

<div class="container">
  <img src="/static/imghw/default1.png"  data-src="background-image.jpg"  class="lazy" alt="CSS ?? ??? ???? ???? ?? ??? ??? ??? ??????" />
  <div class="frosted-glass">
    <h2>Frosted Glass Panel</h2>
    <p>This content is inside a glass-like overlay.</p>
  </div>
</div>

And the container should allow the background to show through:

.container {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
}
.container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.frosted-glass {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80%;
  max-width: 400px;
}

? Important Notes

• Browser Support: backdrop-filter is well-supported in modern browsers (Chrome, Edge, Firefox, Safari), but not in older versions. Use -webkit-backdrop-filter for Safari.

  

• Performance: Blurring large areas can be GPU-intensive. Use moderate blur values (e.g., 8px to 12px).

• Fallbacks: If backdrop-filter isn't supported, the element will just lack blur. You can hide it gracefully or use feature queries:

  @supports (backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px)) {
    .frosted-glass {
      -webkit-backdrop-filter: blur(10px);
      backdrop-filter: blur(10px);
      background-color: rgba(255, 255, 255, 0.1);
    }
  }

  ---

  ? Tips for Better Realism

  • Use subtle gradients or light borders to enhance the glassy feel.
  • Match the background-color tint to your site’s theme (e.g., cool white, light blue).
  • Avoid over-blurring — blur(8px) to blur(12px) usually looks best.

  ---

  Basically, the magic is in combining backdrop-filter: blur() with a translucent background. Once set up, it works like real frosted glass — soft, modern, and elegant.

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