响应式显示与隐藏元素
使用 hidden、block 和 inline-* 配合响应式前缀，在特定屏幕尺寸下显示或隐藏元素。
响应式显示与隐藏元素 是 CoddyKit 上的免费 Tailwind CSS Academy 课时。 这是第 4 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Tailwind CSS Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Tailwind CSS Academy 课程共包含 4 节课。
本课时的部分内容尚未翻译，以英文显示。
Why Show and Hide Responsively?
Different viewport sizes warrant different UI patterns. A desktop navigation shows all links in a horizontal bar, while mobile shows only a hamburger icon that opens a drawer. A data table with 8 columns on desktop might only show 3 key columns on mobile. Rather than building two separate UIs, Tailwind lets you show or hide elements at specific breakpoints using display utilities combined with responsive prefixes.
<!-- Hamburger visible on mobile, full nav on desktop -->
<nav class="flex items-center justify-between p-4">
<span class="font-bold">MyApp</span>
<!-- Full nav: hidden on mobile, visible on md+ -->
<div class="hidden md:flex gap-6">
<a href="#">Home</a>
<a href="#">About</a>
<a href="#">Contact</a>
</div>
<!-- Hamburger: visible on mobile, hidden on md+ -->
<button class="md:hidden">
<svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 6h16M4 12h16M4 18h16" />
</svg>
</button>
</nav>The hidden and block Pattern
The two core utilities for responsive visibility are hidden (display: none) and block (display: block). To show something only on mobile: block md:hidden — it is block by default and becomes none at md+. To show something only on desktop: hidden md:block — none by default and becomes block at md+. These two patterns cover the vast majority of show/hide needs.
<!-- Two core show/hide patterns -->
<!-- Mobile-only element -->
<div class="block md:hidden bg-blue-100 p-3 rounded">
This appears only on mobile (below md breakpoint)
</div>
<!-- Desktop-only element -->
<div class="hidden md:block bg-green-100 p-3 rounded">
This appears only on md screens and wider
</div>Targeting a Specific Breakpoint Range
To show an element only within a specific range — for example, only on tablets (sm to lg, not mobile and not desktop) — combine mobile-hide, show-at-sm, and hide-at-lg: hidden sm:block lg:hidden. This reads: hidden by default, visible at sm, hidden again at lg. This three-class combination isolates the element to the tablet viewport range.
<!-- Show element only on specific viewport ranges -->
<div class="space-y-2">
<!-- Only on mobile (< sm) -->
<div class="bg-red-100 p-2 rounded block sm:hidden">Mobile only (<640px)</div>
<!-- Only on tablets (sm to md) -->
<div class="bg-yellow-100 p-2 rounded hidden sm:block md:hidden">Small tablet only</div>
<!-- Only on desktop (lg+) -->
<div class="bg-green-100 p-2 rounded hidden lg:block">Desktop only (1024px+)</div>
<!-- On all screens -->
<div class="bg-blue-100 p-2 rounded">Always visible</div>
</div>Using flex and grid Instead of block
When an element should be visible as a flex container (not just a block) on certain breakpoints, use hidden md:flex instead of hidden md:block. This is critical for navigation bars, toolbar rows, and card rows that need flex behavior. hidden md:flex items-center gap-4 hides on mobile and reveals as a flex container with alignment on desktop.
<!-- Navigation: hidden on mobile, flex row on desktop -->
<header class="flex items-center justify-between px-6 py-4 border-b">
<span class="font-bold text-lg">Brand</span>
<!-- Desktop nav: flex row with spacing -->
<nav class="hidden md:flex items-center gap-6">
<a href="#" class="text-gray-600 hover:text-gray-900 text-sm">Products</a>
<a href="#" class="text-gray-600 hover:text-gray-900 text-sm">Pricing</a>
<a href="#" class="text-gray-600 hover:text-gray-900 text-sm">Blog</a>
<button class="bg-blue-600 text-white text-sm px-4 py-2 rounded-lg">Sign In</button>
</nav>
<!-- Mobile hamburger -->
<button class="md:hidden p-2">
<span class="block w-5 h-0.5 bg-gray-700 mb-1"></span>
<span class="block w-5 h-0.5 bg-gray-700 mb-1"></span>
<span class="block w-5 h-0.5 bg-gray-700"></span>
</button>
</header>Responsive Table Columns
Data tables on mobile present a challenge — too many columns make the table horizontally scrollable and hard to read. A common solution is hiding less important columns on small screens. Apply hidden md:table-cell to non-essential table columns — they become display: table-cell on tablet and desktop, but are completely hidden on mobile, keeping the table usable on small screens.
<!-- Responsive table: hide secondary columns on mobile -->
<div class="overflow-x-auto">
<table class="w-full text-sm">
<thead>
<tr class="bg-gray-50 text-left">
<th class="p-3 font-semibold">Name</th>
<!-- Hidden on mobile -->
<th class="hidden md:table-cell p-3 font-semibold">Email</th>
<th class="p-3 font-semibold">Status</th>
<!-- Hidden on mobile -->
<th class="hidden lg:table-cell p-3 font-semibold">Joined</th>
<th class="p-3 font-semibold">Actions</th>
</tr>
</thead>
<tbody class="divide-y">
<tr class="hover:bg-gray-50">
<td class="p-3">Alice Johnson</td>
<td class="hidden md:table-cell p-3 text-gray-500">alice@example.com</td>
<td class="p-3"><span class="bg-green-100 text-green-700 px-2 py-0.5 rounded text-xs">Active</span></td>
<td class="hidden lg:table-cell p-3 text-gray-500">Jan 2024</td>
<td class="p-3"><button class="text-blue-600 text-sm">Edit</button></td>
</tr>
</tbody>
</table>
</div>inline-flex and inline-block Variants
For inline elements, use hidden md:inline-flex or hidden md:inline-block to maintain inline behavior alongside sibling text when the element becomes visible. A badge inside a heading, an icon inside a link, or a price tag inline with a product name all need inline or inline-flex display. Using plain block would break the text flow.
<!-- Inline badge reveals on desktop -->
<h2 class="flex items-center gap-2 text-xl font-bold">
Pro Features
<!-- Badge: hidden on mobile, inline-flex on desktop -->
<span class="hidden md:inline-flex items-center gap-1 bg-purple-100 text-purple-700 text-xs font-semibold px-2 py-0.5 rounded-full">
✨ New
</span>
</h2>
<!-- Inline text suffix hides on mobile -->
<button class="flex items-center gap-1 text-sm text-blue-600">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M4 16v1a3 3 0 003 3h10a3 3 0 003-3v-1m-4-4l-4 4m0 0l-4-4m4 4V4" />
</svg>
<span class="hidden sm:inline">Download</span>
</button>Visibility vs Display for Hidden Elements
Tailwind also provides invisible and visible utilities that use CSS visibility: hidden instead of display: none. The key difference: hidden (display:none) removes the element from the layout flow, collapsing its space. invisible hides the element visually but preserves its space in the layout. Use invisible when you need the element to hold its place but not be seen.
<!-- display:none collapses space; visibility:hidden preserves it -->
<div class="space-y-4">
<p>Above</p>
<!-- hidden: collapses, no space reserved -->
<div class="hidden bg-red-100 p-4 rounded">Hidden (no space)</div>
<!-- invisible: space preserved, element not seen -->
<div class="invisible bg-blue-100 p-4 rounded">Invisible (space held)</div>
<p>Below</p>
</div>Responsive Sidebar Toggle
A very common pattern is a sidebar that is permanently visible on desktop but hidden by default on mobile (revealed only when a hamburger is clicked). On desktop, the sidebar is always visible via hidden md:block. On mobile, JavaScript toggles a class to show/hide it — but Tailwind handles the initial visibility. This pattern requires the sidebar to exist in the DOM at all times for SEO and screen reader accessibility.
<!-- Sidebar: always on desktop, togglable on mobile -->
<div class="flex min-h-screen">
<!-- Sidebar: hidden on mobile, always visible on md+ -->
<aside class="hidden md:block w-64 shrink-0 bg-gray-900 text-white p-6">
<nav class="space-y-2">
<a href="#" class="block px-3 py-2 rounded hover:bg-gray-800">Dashboard</a>
<a href="#" class="block px-3 py-2 rounded hover:bg-gray-800">Users</a>
<a href="#" class="block px-3 py-2 rounded hover:bg-gray-800">Settings</a>
</nav>
</aside>
<!-- Main content -->
<main class="flex-1 p-6">
<!-- Mobile menu button -->
<button class="md:hidden mb-4 bg-gray-900 text-white px-3 py-2 rounded">
Menu
</button>
<h1 class="text-2xl font-bold">Content</h1>
</main>
</div>Conditional Text Labels
Icon-only buttons on mobile that show text labels on desktop are a space-saving convention used by many apps. The icon is always visible, but the text label uses hidden sm:inline to appear only on wider screens. This keeps the mobile UI compact while making the desktop version more descriptive. Screen reader users always see the accessible label through aria-label on the button.
<!-- Toolbar: icon-only on mobile, icon+label on desktop -->
<div class="flex items-center gap-2 p-3 border-b">
<button aria-label="Save" class="flex items-center gap-1.5 px-3 py-2 rounded-lg hover:bg-gray-100">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 7H5a2 2 0 00-2 2v9a2 2 0 002 2h14a2 2 0 002-2V9a2 2 0 00-2-2h-3m-1 4l-3 3m0 0l-3-3m3 3V4" />
</svg>
<span class="hidden sm:inline text-sm">Save</span>
</button>
<button aria-label="Share" class="flex items-center gap-1.5 px-3 py-2 rounded-lg hover:bg-gray-100">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8.684 13.342C8.886 12.938 9 12.482 9 12c0-.482-.114-.938-.316-1.342m0 2.684a3 3 0 110-2.684m6.632 8.684A9 9 0 1110.7 3.294" />
</svg>
<span class="hidden sm:inline text-sm">Share</span>
</button>
</div>Showing Only on Specific Devices
For very precise control, you can target a single breakpoint range with two classes. To show an element only at md (768px to 1023px): hidden md:block lg:hidden. To show only at lg and xl but not 2xl: hidden lg:block 2xl:hidden. These multi-class combinations give you fine control over what appears at each viewport width, allowing completely different content presentation strategies per device class.
<!-- Elements visible on exactly one breakpoint range -->
<div class="p-4 space-y-2">
<!-- Shows only on sm (640-767px) -->
<div class="hidden sm:block md:hidden bg-pink-100 p-2 rounded text-sm">
Small screen only (640-767px)
</div>
<!-- Shows only on md (768-1023px) -->
<div class="hidden md:block lg:hidden bg-orange-100 p-2 rounded text-sm">
Medium screen only (768-1023px)
</div>
<!-- Shows only on lg (1024-1279px) -->
<div class="hidden lg:block xl:hidden bg-lime-100 p-2 rounded text-sm">
Large screen only (1024-1279px)
</div>
</div>Accessibility Notes for Hidden Elements
Elements hidden with hidden (display:none) are also hidden from screen readers and excluded from the accessibility tree — which is usually the correct behavior. But if you need to hide something visually while keeping it accessible to screen readers, use sr-only instead. Conversely, if you want to hide content from screen readers but show it visually, use aria-hidden='true' on the element. Choose the right hiding technique based on your accessibility intent.
<!-- Three hiding techniques with different a11y behavior -->
<!-- 1. Visual + screen reader hidden (most common) -->
<div class="hidden md:block">Full description for desktop</div>
<!-- 2. Visually hidden but screen-reader visible -->
<span class="sr-only">Close dialog</span>
<!-- 3. Visually visible but screen-reader hidden -->
<div aria-hidden="true" class="text-3xl">🎉</div>Quick Check
Test your understanding of Tailwind CSS Mastery concepts from this lesson.
Lesson Recap
In this lesson you learned: hidden md:block shows an element only on md screens and wider, block md:hidden shows an element only on mobile below the md breakpoint, and hidden sm:block md:hidden targets a single breakpoint range like sm-to-md only. This completes the Responsive Design Breakpoints course — next we explore dark mode with Tailwind.
常见问题解答
「响应式显示与隐藏元素」课时是免费的吗？
是的 — 「响应式显示与隐藏元素」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Tailwind CSS Academy 课程的其余内容，请升级到 CoddyKit PRO。 Tailwind CSS Academy 课程共包含 4 节课。
「响应式显示与隐藏元素」这节课中我会学到什么？
使用 hidden、block 和 inline-* 配合响应式前缀，在特定屏幕尺寸下显示或隐藏元素。 你通过在浏览器中直接运行的动手代码来练习 Tailwind CSS Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。
学习 Tailwind CSS Academy 需要有经验吗？
无需任何先前经验。CoddyKit 上的 Tailwind CSS Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 4 节课，共 4 节。
「响应式显示与隐藏元素」课时需要多长时间？
大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。
我能在这节 Tailwind CSS Academy 课中编写并运行代码吗？
能。每节 Tailwind CSS Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。