文字（Text）
文字通用類別的文檔和示例，用于控制對齊、環(huán)繞、粗細等。
文本對齊方式
使用文字對齊類別輕松地將文本重新對齊元件。對于開始、結(jié)束和中心對齊可以使用與網(wǎng)格系統(tǒng)相同之視窗寬度斷點的響應(yīng)式類別。
Start aligned text on all viewport sizes.
Center aligned text on all viewport sizes.
End aligned text on all viewport sizes.
Start aligned text on viewports sized SM (small) or wider.
Start aligned text on viewports sized MD (medium) or wider.
Start aligned text on viewports sized LG (large) or wider.
Start aligned text on viewports sized XL (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-start">Start aligned text on viewports sized SM (small) or wider.</p>
<p class="text-md-start">Start aligned text on viewports sized MD (medium) or wider.</p>
<p class="text-lg-start">Start aligned text on viewports sized LG (large) or wider.</p>
<p class="text-xl-start">Start aligned text on viewports sized XL (extra-large) or wider.</p>文本換行和溢出
使用.text-wrap類別來包覆文字。
<div class="badge bg-primary text-wrap" style="width: 6rem;">
This text should wrap.
</div>可搭配.text-nowrap類別防止換行。
<div class="text-nowrap bd-highlight" style="width: 8rem;">
This text should overflow the parent.
</div>文字斷行
使用.text-break設(shè)定word-wrap: break-word和word-break: break-word預(yù)防長文破壞元件的排版。Bootstrap使用word-wrap以取代更常見的方法overflow-wrap來獲得更廣泛的瀏覽器支持，增加word-break: break-word來避免flex容器的問題。
mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
<p class="text-break">mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm</p>文本轉(zhuǎn)換（大小寫）
使用文字大寫字母類別將元件中的文字內(nèi)容轉(zhuǎn)大寫。
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>請注意.text-capitalize只有將第一個字母轉(zhuǎn)為大寫，而其他字母不受影響。
字體大小
快速的改變文字的font-size。標題類別（例如：.h1–.h6）使用了font-size、font-weight和line-height，但以下的通用類別只使用font-size。這些通用類別的尺寸設(shè)定也符合HTML的標題元素，所以當數(shù)字增加時，他們的尺寸也會跟著變小。
.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>透過修改$font-sizes的Sass map來客制化您的font-size。
字體粗細和斜體
使用這些通用類別來快速地改變文字內(nèi)容的font-weight或font-style。font-style通用類別的縮寫為.fst-*，font-weight通用類別的縮寫為.fw-*。
Bold text.
Bolder weight text (relative to the parent element).
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-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>行高
使用.lh-*通用類別來改變行高。
Some placeholder content to show off the line height utilities. Happy birthday. You could've been the greatest. She ride me like a roller coaster. I messed around and got addicted. You just gotta ignite the light and let it shine! I'm intrigued, for a peek, heard it's fascinating. Catch her if you can. I should've told you what you meant to me 'Cause now I pay the price. Do you ever feel, feel so paper thin.
But you better choose carefully. Yo, shout out to all you kids, buying bottle service, with your rent money. She's sweet as pie but if you break her heart. Just own the night like the 4th of July! In another life I would be your girl. Playing ping pong all night long, everything's all neon and hazy. Shorty so bad, I’m sprung and I don’t care.
I can feel a phoenix inside of me. Maybe a reason why all the doors are closed. We go higher and higher. Passport stamps, she's cosmopolitan. Someone said you had your tattoo removed. All my girls vintage Chanel baby. Someone said you had your tattoo removed.
But I will get there. This is real so take a chance and don't ever look back, don't ever look back. You could travel the world but nothing comes close to the golden coast. Of anything and everything. Venice beach and Palm Springs, summertime is everything. Do you ever feel already buried deep six feet under? It's time to bring out the big balloons. So cover your eyes, I have a surprise. So I don't have to say you were the one that got away.
<p class="lh-1">Some placeholder content to show off the line height utilities. Happy birthday. You could've been the greatest. She ride me like a roller coaster. I messed around and got addicted. You just gotta ignite the light and let it shine! I'm intrigued, for a peek, heard it's fascinating. Catch her if you can. I should've told you what you meant to me 'Cause now I pay the price. Do you ever feel, feel so paper thin.</p>
<p class="lh-sm">But you better choose carefully. Yo, shout out to all you kids, buying bottle service, with your rent money. She's sweet as pie but if you break her heart. Just own the night like the 4th of July! In another life I would be your girl. Playing ping pong all night long, everything's all neon and hazy. Shorty so bad, I’m sprung and I don’t care.</p>
<p class="lh-base">I can feel a phoenix inside of me. Maybe a reason why all the doors are closed. We go higher and higher. Passport stamps, she's cosmopolitan. Someone said you had your tattoo removed. All my girls vintage Chanel baby. Someone said you had your tattoo removed.</p>
<p class="lh-lg">But I will get there. This is real so take a chance and don't ever look back, don't ever look back. You could travel the world but nothing comes close to the golden coast. Of anything and everything. Venice beach and Palm Springs, summertime is everything. Do you ever feel already buried deep six feet under? It's time to bring out the big balloons. So cover your eyes, I have a surprise. So I don't have to say you were the one that got away.</p>Monospace
選擇使用.font-monospace來更換為monospace字體堆疊。
This is in monospace
<p class="font-monospace">This is in monospace</p>重置顏色
使用.text-reset來重置一個文字或連接色彩，以便它們繼承父層的顏色。
Muted text with a reset link.
<p class="text-muted">
Muted text with a <a href="#" class="text-reset">reset link</a>.
</p>文字裝飾
使用文字裝飾類別來裝飾元件中的文字。
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>Sass
Variables
// stylelint-disable value-keyword-case
$font-family-sans-serif: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", 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
$font-family-base: var(--#{$variable-prefix}font-sans-serif);
$font-family-code: var(--#{$variable-prefix}font-monospace);
// $font-size-root effects the value of `rem`, which is used for as well font sizes, paddings and margins
// $font-size-base effects 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-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;
Maps
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: $h6-font-size
);
Utilities API
Font and text utilities are declared in our utilities API in scss/_utilities.scss.
"font-family": (
property: font-family,
class: font,
values: (monospace: var(--#{$variable-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: (
light: $font-weight-light,
lighter: $font-weight-lighter,
normal: $font-weight-normal,
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
),