行高与字母间距
使用 leading-* 实用程序控制行高，使用 tracking-* 实用程序控制字母间距，从而提升可读性。
行高与字母间距 是 CoddyKit 上的免费 Tailwind CSS Academy 课时。 这是第 3 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 Line Height Matters
Line height is the space between lines. Too tight feels cramped, too loose feels scattered. Getting it right makes long text noticeably easier to read.
Tailwind's leading-* Utilities
Set it with the leading-* utilities: leading-tight (1.25), leading-normal (1.5), leading-relaxed (1.625), leading-loose (2.0). The name comes from old print type.
<p class="leading-tight">Tight: good for headings</p>
<p class="leading-normal">Normal: default for most text</p>
<p class="leading-relaxed">Relaxed: comfortable for body text</p>
<p class="leading-loose">Loose: for spacious editorial layouts</p>Leading for Headings vs Body
Use leading-tight for headings, since big text already has room, and leading-relaxed for body, which needs more breathing space. leading-normal is a safe default.
<h1 class="text-4xl font-bold leading-tight text-gray-900">
A Two-Line Heading That
Stays Tightly Together
</h1>
<p class="text-base leading-relaxed text-gray-600 mt-4">
Body paragraph text benefits from more line spacing.
It makes long passages easier to follow line by line.
</p>Fixed Leading Values
Tailwind also has fixed leading: leading-3 to leading-10 set exact pixel heights. Reach for these in tables or dense UI where you need precise spacing.
<p class="leading-3">Very tight (12px)</p>
<p class="leading-5">Compact (20px)</p>
<p class="leading-7">Comfortable (28px)</p>
<p class="leading-10">Spacious (40px)</p>Introduction to Letter Spacing
Letter spacing, or tracking, is the gap between characters. Tight tracking feels modern on big headings; wide tracking suits short labels like badges and tags.
Tailwind's tracking-* Utilities
Control it with tracking-*: from tracking-tighter and tracking-tight, through normal, to tracking-wide and tracking-widest. Negative pulls in, positive spreads out.
<p class="tracking-tighter">Tighter: editorial large headings</p>
<p class="tracking-normal">Normal: default body text</p>
<p class="tracking-wide">Wide: comfortable subheadings</p>
<p class="tracking-widest">Widest: UI labels and badges</p>Tracking for Display Headings
Big display headings almost always want tracking-tight or tracking-tighter. At large sizes the default spacing feels loose, and tightening it looks polished.
<!-- Without tracking adjustment -->
<h1 class="text-6xl font-bold">Feels Loose</h1>
<!-- Professional: tighter tracking at large sizes -->
<h1 class="text-6xl font-bold tracking-tight">Feels Cohesive</h1>Tracking for UI Labels
For uppercase UI labels, try text-xs font-semibold uppercase tracking-wider text-gray-500. The extra spacing offsets how cramped uppercase letters can feel.
<!-- Dashboard section label -->
<span class="text-xs font-semibold uppercase tracking-wider text-gray-500">
Recent Activity
</span>
<!-- Badge -->
<span class="bg-green-100 text-green-700 text-xs font-semibold uppercase tracking-wider px-2 py-1 rounded-full">
Active
</span>Combining Leading and Tracking
Leading and tracking shine together. A pull quote might use leading-relaxed tracking-wide for an open feel; a metric label uses tracking-widest leading-none.
<!-- Pull quote style -->
<blockquote class="text-2xl italic font-light leading-relaxed tracking-wide text-gray-600">
'Design is intelligence made visible.'
</blockquote>
<!-- Dashboard label style -->
<p class="text-xs font-bold uppercase tracking-widest leading-none text-gray-500">
Revenue MTD
</p>Word Spacing Utilities
Tailwind even has word spacing: word-spacing-tight, normal, and wide adjust the gap between words. You will need it rarely, mostly for justified or display text.
<p class="word-spacing-wide text-gray-700">
Extra space between each word in this sentence.
</p>Practical: Blog Article Styles
A polished blog article: text-4xl font-bold leading-tight for the title, text-xl font-light for the subtitle, text-lg leading-relaxed for body, max-w-prose to wrap.
<article class="max-w-prose mx-auto px-4">
<h1 class="text-4xl font-bold leading-tight tracking-tight text-gray-900 mb-2">
Article Title
</h1>
<p class="text-xl font-light leading-snug text-gray-500 mb-8">
A compelling subtitle for the article.
</p>
<p class="text-lg leading-relaxed text-gray-700">
The body of the article content goes here.
</p>
</article>Quick Check
Quick check! See how spacing settled in. 📏
Lesson Recap
Nice! leading-* sets line height, tracking-* sets letter spacing, and headings like tight tracking while body likes relaxed leading. Next up: alignment and decoration.
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常见问题解答
「行高与字母间距」课时是免费的吗？
是的 — 「行高与字母间距」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。
「行高与字母间距」这节课中我会学到什么？
使用 leading-* 实用程序控制行高，使用 tracking-* 实用程序控制字母间距，从而提升可读性。 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 3 节课，共 4 节。
「行高与字母间距」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。