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Crystal Portal Card

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<div class="crystal-portal-card">
  <!-- Outer Glow -->
  <div class="outer-glow"></div>
  
  <!-- Rotating Border -->
  <div class="rotating-border"></div>
  
  <!-- Main Card -->
  <div class="card-body">
    <!-- Crystal Particles -->
    <div class="crystal-particles">
      <div class="particle particle-1"></div>
      <div class="particle particle-2"></div>
      <div class="particle particle-3"></div>
      <div class="particle particle-4"></div>
    </div>
    
    <!-- Holographic Overlay -->
    <div class="holographic-overlay"></div>
    
    <!-- Content -->
    <div class="card-content">
      <!-- Header -->
      <div class="card-header">
        <div class="status-indicator"></div>
        <h3 class="card-title">Crystal Portal</h3>
      </div>
      
      <!-- Description -->
      <p class="card-description">
        A mystical gateway that shimmers with otherworldly energy, 
        connecting dimensions through crystalline formations and ethereal light.
      </p>
      
      <!-- Tags -->
      <div class="card-tags">
        <span class="tag tag-mystical">Mystical</span>
        <span class="tag tag-portal">Portal</span>
      </div>
      
      <!-- Actions -->
      <div class="card-actions">
        <button class="btn-primary">Enter Portal</button>
        <button class="btn-secondary">★</button>
      </div>
    </div>
    
    <!-- Portal Effect -->
    <div class="portal-effect">
      <div class="portal-inner"></div>
      <div class="portal-core"></div>
    </div>
  </div>
</div>
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What is inside Crystal Portal Card

Crystal Portal Card is a CSS card built with a keyframe animation, gradient fills, a blurred backdrop, defined in 253 lines across 40 selectors.

37
CSS properties
40
Selectors
253
Lines of CSS
3
Formats

Techniques used

Keyframe animationTransitionsTransformsGradientsShadowsFiltersBackdrop blurHover stateFlexbox

Animations defined: spinpulseping

CSS properties in this component

align-itemsanimationanimation-delaybackdrop-filterbackgroundborderborder-colorborder-radiusbottombox-shadowcolorcursordisplayfilterflexflex-directionflex-wrapfont-sizefont-weightgapheightinsetleftline-heightmargin-bottommargin-topopacityoverflowpaddingpositionrighttoptransformtransitionuser-selectwidthz-index

Accessibility check2 to fix

  • Built on a native <button> element, so keyboard focus and screen reader semantics work without extra attributes.
  • No focus style is defined. Add one before shipping, or keyboard users lose track of position.
  • Animates without a prefers-reduced-motion guard. Wrap the animation in that query if motion sensitivity matters to your audience.

Browser support notes

  • Backdrop filter needs a -webkit- prefix on older Safari.

These notes are generated by reading this component's own source, so they describe what it actually does rather than what a template says. Copy the code above in HTML, CSS, Tailwind and adapt it freely.

About Crystal Portal Card

Crystal Portal Card is a card built with a keyframe animation, gradient fills, transforms, layered shadows, a blurred backdrop and CSS filters. Its stylesheet runs to 253 lines across 40 rules, declaring 37 distinct properties. It styles hover state explicitly, so the component responds to interaction rather than sitting still. The animation is driven by keyframe sequences named spin, pulse and ping, which you can retime or remove without touching the rest of the styling. Every format shown on this page is the same component, so you can take HTML, CSS and Tailwind depending on how your project is set up. Nothing is minified and nothing depends on a framework.

When to use

How it works

The base rule sets the shape with border-radius, display, height and padding. The fill is a gradient rather than a flat colour, so it is a single background declaration with no image to load. Movement is done with transforms rather than by changing position or size, which is what keeps it smooth: transforms are composited and do not force the browser to lay the page out again. State changes are eased with a transition, so hovering does not snap. The looping motion comes from spin, pulse and ping. Changing the animation-duration is usually the only edit needed to make it faster or calmer. The backdrop filter blurs whatever sits behind the element, which means the effect depends on the page underneath rather than on the component alone.

Accessibility

Keyboard navigation
Supported
Screen reader
Friendly
ARIA
Native element semantics, no extra attributes needed

Built on a native <button> element, so keyboard focus and screen reader semantics work without extra attributes. No focus style is defined. Add one before shipping, or keyboard users lose track of position. Animates without a prefers-reduced-motion guard. Wrap the animation in that query if motion sensitivity matters to your audience. Those are 2 things to fix before this ships in front of users.

Browser support

Chrome
76+
Firefox
103+
Safari
9+
Edge
79+

Backdrop filter needs a -webkit- prefix on older Safari.

Frequently asked questions