文本
用于控制对齐、换行、粗细等的常见文本工具的文档和示例。
文本对齐
¥Text alignment
使用文本对齐类轻松地将文本重新对齐到组件。对于开始、结束和中心对齐，可以使用与网格系统相同的视口宽度断点的响应类。
¥Easily realign text to components with text alignment classes. For start, end, and center alignment, responsive classes are available that use the same viewport width breakpoints as the grid system.
Start aligned text on all viewport sizes.
Center aligned text on all viewport sizes.
End aligned text on all viewport sizes.
End aligned text on viewports sized SM (small) or wider.
End aligned text on viewports sized MD (medium) or wider.
End aligned text on viewports sized LG (large) or wider.
End aligned text on viewports sized XL (extra large) or wider.
End aligned text on viewports sized XXL (extra extra large) or wider.
<p class="text-start">Start aligned text on all viewport sizes.</p>
<p class="text-center">Center aligned text on all viewport sizes.</p>
<p class="text-end">End aligned text on all viewport sizes.</p>
<p class="text-sm-end">End aligned text on viewports sized SM (small) or wider.</p>
<p class="text-md-end">End aligned text on viewports sized MD (medium) or wider.</p>
<p class="text-lg-end">End aligned text on viewports sized LG (large) or wider.</p>
<p class="text-xl-end">End aligned text on viewports sized XL (extra large) or wider.</p>
<p class="text-xxl-end">End aligned text on viewports sized XXL (extra extra large) or wider.</p>文本换行和溢出
¥Text wrapping and overflow
使用 .text-wrap 类换行文本。
¥Wrap text with a .text-wrap class.
<div class="badge text-bg-primary text-wrap" style="width: 6rem;">
This text should wrap.
</div>防止文本使用 .text-nowrap 类换行。
¥Prevent text from wrapping with a .text-nowrap class.
<div class="text-nowrap bg-body-secondary border" style="width: 8rem;">
This text should overflow the parent.
</div>断词
¥Word break
通过使用 .text-break 设置 word-wrap: break-word 和 word-break: break-word 来防止长文本字符串破坏组件的布局。我们使用 word-wrap 而不是更常见的 overflow-wrap 来获得更广泛的浏览器支持，并添加已弃用的 word-break: break-word 以避免 Flex 容器出现问题。
¥Prevent long strings of text from breaking your components’ layout by using .text-break to set word-wrap: break-word and word-break: break-word. We use word-wrap instead of the more common overflow-wrap for wider browser support, and add the deprecated word-break: break-word to avoid issues with flex containers.
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
<p class="text-break">mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm</p>.text-break is removed from our RTL compiled CSS.
文本变换
¥Text transform
使用我们的文本大写类转换组件中的文本：text-lowercase、text-uppercase 或 text-capitalize。
¥Transform text in components with our text capitalization classes: text-lowercase, text-uppercase or text-capitalize.
Lowercased text.
Uppercased text.
CapiTaliZed text.
<p class="text-lowercase">Lowercased text.</p>
<p class="text-uppercase">Uppercased text.</p>
<p class="text-capitalize">CapiTaliZed text.</p>请注意 .text-capitalize 仅更改每个单词的第一个字母，而任何其他字母的大小写不受影响。
¥Note how .text-capitalize only changes the first letter of each word, leaving the case of any other letters unaffected.
字体大小
¥Font size
快速更改文本的 font-size。虽然我们的标题类别（例如 .h1–.h6）适用于 font-size、font-weight 和 line-height，但这些工具仅适用于 font-size。这些工具的大小与 HTML 的标题元素相匹配，因此随着数量的增加，它们的大小会减小。
¥Quickly change the font-size of text. While our heading classes (e.g., .h1–.h6) apply font-size, font-weight, and line-height, these utilities only apply font-size. Sizing for these utilities matches HTML’s heading elements, so as the number increases, their size decreases.
.fs-1 text
.fs-2 text
.fs-3 text
.fs-4 text
.fs-5 text
.fs-6 text
<p class="fs-1">.fs-1 text</p>
<p class="fs-2">.fs-2 text</p>
<p class="fs-3">.fs-3 text</p>
<p class="fs-4">.fs-4 text</p>
<p class="fs-5">.fs-5 text</p>
<p class="fs-6">.fs-6 text</p>通过修改 $font-sizes Sass 映射来自定义可用的 font-size。
¥Customize your available font-sizes by modifying the $font-sizes Sass map.
字体粗细和斜体
¥Font weight and italics
使用这些工具快速更改文本的 font-weight 或 font-style。font-style 工具缩写为 .fst-*，font-weight 工具缩写为 .fw-*。
¥Quickly change the font-weight or font-style of text with these utilities. font-style utilities are abbreviated as .fst-* and font-weight utilities are abbreviated as .fw-*.
Bold text.
Bolder weight text (relative to the parent element).
Semibold weight text.
Medium weight text.
Normal weight text.
Light weight text.
Lighter weight text (relative to the parent element).
Italic text.
Text with normal font style
<p class="fw-bold">Bold text.</p>
<p class="fw-bolder">Bolder weight text (relative to the parent element).</p>
<p class="fw-semibold">Semibold weight text.</p>
<p class="fw-medium">Medium weight text.</p>
<p class="fw-normal">Normal weight text.</p>
<p class="fw-light">Light weight text.</p>
<p class="fw-lighter">Lighter weight text (relative to the parent element).</p>
<p class="fst-italic">Italic text.</p>
<p class="fst-normal">Text with normal font style</p>线高
¥Line height
使用 .lh-* 工具更改行高。
¥Change the line height with .lh-* utilities.
This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.
This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.
This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.
This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.
<p class="lh-1">This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.</p>
<p class="lh-sm">This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.</p>
<p class="lh-base">This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.</p>
<p class="lh-lg">This is a long paragraph written to show how the line-height of an element is affected by our utilities. Classes are applied to the element itself or sometimes the parent element. These classes can be customized as needed with our utility API.</p>等宽字体
¥Monospace
使用 .font-monospace 将选择更改为我们的等宽字体堆栈。
¥Change a selection to our monospace font stack with .font-monospace.
This is in monospace
<p class="font-monospace">This is in monospace</p>重置颜色
¥Reset color
使用 .text-reset 重置文本或链接的颜色，以便它继承其父级的颜色。
¥Reset a text or link’s color with .text-reset, so that it inherits the color from its parent.
Secondary body text with a reset link.
<p class="text-body-secondary">
Secondary body text with a <a href="#" class="text-reset">reset link</a>.
</p>文本装饰
¥Text decoration
使用文本装饰类来装饰组件中的文本。
¥Decorate text in components with text decoration classes.
This text has a line underneath it.
This text has a line going through it.
This link has its text decoration removed<p class="text-decoration-underline">This text has a line underneath it.</p>
<p class="text-decoration-line-through">This text has a line going through it.</p>
<a href="#" class="text-decoration-none">This link has its text decoration removed</a>CSS
Sass 变量
¥Sass variables
默认类型和字体相关的 Sass 变量：
¥Default type and font related Sass variables:
// stylelint-disable value-keyword-case
$font-family-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans", "Liberation Sans", Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
$font-family-monospace: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
// stylelint-enable value-keyword-case
$font-family-base: var(--#{$prefix}font-sans-serif);
$font-family-code: var(--#{$prefix}font-monospace);
// $font-size-root affects the value of `rem`, which is used for as well font sizes, paddings, and margins
// $font-size-base affects the font size of the body text
$font-size-root: null;
$font-size-base: 1rem; // Assumes the browser default, typically `16px`
$font-size-sm: $font-size-base * .875;
$font-size-lg: $font-size-base * 1.25;
$font-weight-lighter: lighter;
$font-weight-light: 300;
$font-weight-normal: 400;
$font-weight-medium: 500;
$font-weight-semibold: 600;
$font-weight-bold: 700;
$font-weight-bolder: bolder;
$font-weight-base: $font-weight-normal;
$line-height-base: 1.5;
$line-height-sm: 1.25;
$line-height-lg: 2;
$h1-font-size: $font-size-base * 2.5;
$h2-font-size: $font-size-base * 2;
$h3-font-size: $font-size-base * 1.75;
$h4-font-size: $font-size-base * 1.5;
$h5-font-size: $font-size-base * 1.25;
$h6-font-size: $font-size-base;
Sass 映射
¥Sass maps
字体大小工具是从此映射与我们的工具 API 结合生成的。
¥Font-size utilities are generated from this map, in combination with our utilities API.
$font-sizes: (
1: $h1-font-size,
2: $h2-font-size,
3: $h3-font-size,
4: $h4-font-size,
5: $h5-font-size,
6: $h6-font-size
);
$theme-colors-text: (
"primary": $primary-text-emphasis,
"secondary": $secondary-text-emphasis,
"success": $success-text-emphasis,
"info": $info-text-emphasis,
"warning": $warning-text-emphasis,
"danger": $danger-text-emphasis,
"light": $light-text-emphasis,
"dark": $dark-text-emphasis,
);
Sass 工具 API
¥Sass utilities API
字体和文本工具在 scss/_utilities.scss 中的工具 API 中声明。Learn how to use the utilities API.
¥Font and text utilities are declared in our utilities API in scss/_utilities.scss. Learn how to use the utilities API.
"font-family": (
property: font-family,
class: font,
values: (monospace: var(--#{$prefix}font-monospace))
),
"font-size": (
rfs: true,
property: font-size,
class: fs,
values: $font-sizes
),
"font-style": (
property: font-style,
class: fst,
values: italic normal
),
"font-weight": (
property: font-weight,
class: fw,
values: (
lighter: $font-weight-lighter,
light: $font-weight-light,
normal: $font-weight-normal,
medium: $font-weight-medium,
semibold: $font-weight-semibold,
bold: $font-weight-bold,
bolder: $font-weight-bolder
)
),
"line-height": (
property: line-height,
class: lh,
values: (
1: 1,
sm: $line-height-sm,
base: $line-height-base,
lg: $line-height-lg,
)
),
"text-align": (
responsive: true,
property: text-align,
class: text,
values: (
start: left,
end: right,
center: center,
)
),
"text-decoration": (
property: text-decoration,
values: none underline line-through
),
"text-transform": (
property: text-transform,
class: text,
values: lowercase uppercase capitalize
),
"white-space": (
property: white-space,
class: text,
values: (
wrap: normal,
nowrap: nowrap,
)
),
"word-wrap": (
property: word-wrap word-break,
class: text,
values: (break: break-word),
rtl: false
),