Designing with CSS Glassmorphism

Glassmorphism is a UI design trend that creates a frosted glass effect. It brings a sense of depth, modernism, and premium aesthetic to web applications, often seen in macOS, Windows 11, and top-tier SaaS landing pages.

The Core Components of Glassmorphism

To achieve the perfect frosted glass look, you need four key ingredients:

1. Translucency: A semi-transparent background color.
2. Background Blur: The crucial element that "frosts" whatever is behind the element.
3. Subtle Borders: A very thin, semi-transparent border to define the edge of the glass.
4. Vibrant Backgrounds: Glassmorphism looks terrible on solid white or black backgrounds. It requires colorful, organic shapes behind it to shine.

Writing the CSS

Here is the raw CSS required to build a beautiful glass card:

.glass-card {
  /* 1. Translucency */
  background: rgba(255, 255, 255, 0.05);

  /* 2. Background Blur */
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);

  /* 3. Subtle Borders */
  border: 1px solid rgba(255, 255, 255, 0.1);

  /* Standard styling */
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

Doing it in Tailwind CSS

If you use Tailwind CSS, creating this effect is incredibly simple using built-in utility classes:

<div className="bg-white/5 backdrop-blur-xl border border-white/10 rounded-2xl p-6 shadow-xl">
  Content goes here
</div>