tailwindcss-effects

# Tailwind CSS v4.1 Effects

Effects utilities to add shadows, filters, masks and visual effects to elements.

## Box Shadow

### Shadows Standard

```html
<!-- Preset shadows -->
<div class="shadow-none">No shadow</div>
<div class="shadow-xs">Extra small shadow</div>
<div class="shadow-sm">Small shadow</div>
<div class="shadow">Base shadow</div>
<div class="shadow-md">Medium shadow</div>
<div class="shadow-lg">Large shadow</div>
<div class="shadow-xl">Extra large shadow</div>
<div class="shadow-2xl">2XL shadow</div>
```

### Shadow Color (v4.1 NEW)

```html
<!-- Custom shadow colors -->
<div class="shadow-sm shadow-red-500">Red tinted shadow</div>
<div class="shadow shadow-blue-400">Blue tinted shadow</div>
<div class="shadow-lg shadow-purple-500/50">Purple shadow with opacity</div>
```

### Inset Shadow (v4.1 NEW)

```html
<!-- Inner shadows -->
<div class="inset-shadow-sm">Inset small shadow</div>
<div class="inset-shadow">Inset base shadow</div>
<div class="inset-shadow-lg">Inset large shadow</div>
<div class="inset-shadow-lg inset-shadow-blue-500">Inset shadow with color</div>
```

### Arbitrary Shadow Values

```html
<div class="shadow-[0_4px_12px_rgba(0,0,0,0.3)]">Custom shadow</div>
<div class="shadow-[inset_0_1px_3px_0_rgba(0,0,0,0.1)]">Custom inset</div>
```

## Opacity

### Opacity Utilities

```html
<!-- Opacity scale 0-100% -->
<div class="opacity-0">Fully transparent</div>
<div class="opacity-25">25% opacity</div>
<div class="opacity-50">50% opacity</div>
<div class="opacity-75">75% opacity</div>
<div class="opacity-100">Fully opaque</div>
```

### Opacity with Colors

```html
<!-- Shorthand opacity in color values -->
<div class="bg-red-500/50">Red with 50% opacity</div>
<div class="text-blue-600/75">Text with 75% opacity</div>
<div class="border-gray-400/25">Border with 25% opacity</div>
<div class="shadow-lg shadow-black/30">Shadow with 30% opacity</div>
```

## Filters

### Blur

```html
<div class="blur-none">No blur</div>
<div class="blur-sm">Sma