/tailwindcss-sizing

name: tailwindcss-sizing
description: "Use when setting element width/height, constraining min/max dimensions, using dynamic viewport height (h-dvh), or fixing an aspect ratio."
user-invocable: false

<objective> Complete reference for Tailwind CSS v4.1 sizing utilities: width (`w-*`, `w-screen`, `w-full`, `w-auto`, `w-min`/`w-max`/`w-fit`), height (`h-*`, `h-screen`, `h-full`, and the new `h-dvh` dynamic viewport height that accounts for browser UI), min/max constraints (`min-w-*`/`max-w-*`/`min-h-*`/`max-h-*`), and aspect-ratio (`aspect-square`, `aspect-video`, arbitrary ratios).

Includes common composition patterns: full-screen containers, constrained content width, image/video wrappers, and sidebar layouts. </objective>

Tailwind CSS Sizing Utilities

Comprehensive guide to sizing utilities in Tailwind CSS v4.1, including width, height, constraints, and aspect ratio controls.

Width Utilities

Basic Width Classes

• `w-0` - `w-96`: Fixed widths from 0 to 384px
• `w-full` - 100% width
• `w-screen` - 100% of viewport width
• `w-auto` - Auto width
• `w-min` - min-content
• `w-max` - max-content
• `w-fit` - fit-content

Responsive Width

Apply different widths at different breakpoints:

<div class="w-full md:w-1/2 lg:w-1/3">
  Responsive width
</div>

Height Utilities

Basic Height Classes

• `h-0` - `h-96`: Fixed heights from 0 to 384px
• `h-full` - 100% height
• `h-screen` - 100% of viewport height (100vh)
• `h-auto` - Auto height
• `h-min` - min-content
• `h-max` - max-content
• `h-fit` - fit-content
• `h-dvh` - Dynamic viewport height (NEW in v4.1)

Dynamic Viewport Height (h-dvh)

The `h-dvh` utility uses the dynamic viewport height, which accounts for browser UI elements:

<div class="h-dvh">
  Full dynamic viewport height
</div>

Min/Max Width

min-width

• `min-w-0` - min-width: 0
• `min-w-full` - min-width: 100%
• `min-w-min` - min-width: min-content
• `min-w-max` - min-width: max-content
• `min-w-fit` - min-width: fit-content

max-width

• `max-w-none` - max-width: none
• `max-w-full` - max-width: 100%
• `max-w-screen-sm` - Based on breakpoints
• `max-w-screen-md`
• `max-w-screen-lg`
• `max-w-screen-xl`
• `max-w-screen-2xl`

Min/Max Height

min-height

• `min-h-0` - min-height: 0
• `min-h-full` - min-height: 100%
• `min-h-screen` - min-height: 100vh
• `min-h-min` - min-height: min-content
• `min-h-max` - min-height: max-content
• `min-h-fit` - min-height: fit-content

max-height

• `max-h-none` - max-height: none
• `max-h-full` - max-height: 100%
• `max-h-screen` - max-height: 100vh
• `max-h-min` - max-height: min-content
• `max-h-max` - max-height: max-content
• `max-h-fit` - max-height: fit-content

Aspect Ratio

Common Aspect Ratios

• `aspect-auto` - auto
• `aspect-square` - 1 / 1
• `aspect-video` - 16 / 9

Custom Aspect Ratios

<!-- 3:2 ratio -->
<div class="aspect-[3/2]">
  Image container
</div>

Common Patterns

Full Screen Container

<div class="w-screen h-dvh bg-white">
  Full screen content
</div>

Constrained Container

<div class="max-w-4xl mx-auto w-full px-4">
  Content with max width and padding
</div>

Image Wrapper

<div class="w-full h-auto">
  <img src="image.jpg" alt="description" class="w-full h-auto object-cover" />
</div>

Video Container

<div class="w-full aspect-video bg-black">
  <video src="video.mp4" class="w-full h-full"></video>
</div>

Sidebar Layout

<div class="flex min-h-screen">
  <aside class="w-64 h-screen overflow-auto">
    Sidebar
  </aside>
  <main class="flex-1">
    Content
  </main>
</div>

References

• [Width Documentation](https://tailwindcss.com/docs/width)
• [Height Documentation](https://tailwindcss.com/docs/height)
• [Min-Width Documentation](https://tailwindcss.com/docs/min-width)
• [Max-Width Documentation](https://tailwindcss.com/docs/max-width)
• [Min-Height Documentation](https://tailwindcss.com/docs/min-height)
• [Max-Height Documentation](https://tailwindcss.com/docs/max-height)
• [Aspect Ratio Documentation](https://tailwindcss.com/docs/aspect-ratio)