字体排版
Bootstrap 排版的文档和示例,包括全局设置、标题、正文文本、列表等。
全局设置
Bootstrap设置基本的全局显示、排版和链接样式。当需要更多控制时,请查看 text utility classes。
- 使用 本机字体堆栈为每个操作系统和设备选择最佳的
font-family
。 - 为了获得更具包容性和可访问性的字体比例,我们使用浏览器的默认根
font-size
(通常为 16px),以便访问者可以根据需要自定义其浏览器默认值。 - 使用
$font-family-base
、$font-size-base
和$line-height-base
属性作为应用于<body>
的排版基础。 - 通过
$link-color
设置全局链接颜色。 - 使用
$body-bg
在<body>
上设置background-color
(默认为“#fff”)。
这些样式可以在_reboot.scss
中找到,全局变量在_variables.scss
中定义。确保在rem
中设置$font-size-base
。
标题
所有 HTML 标题(<h1>
到<h6>
)都可用。
Heading | Example |
---|---|
<h1></h1> |
h1. Bootstrap heading |
<h2></h2> |
h2. Bootstrap heading |
<h3></h3> |
h3. Bootstrap heading |
<h4></h4> |
h4. Bootstrap heading |
<h5></h5> |
h5. Bootstrap heading |
<h6></h6> |
h6. Bootstrap heading |
<h1>h1. Bootstrap heading</h1>
<h2>h2. Bootstrap heading</h2>
<h3>h3. Bootstrap heading</h3>
<h4>h4. Bootstrap heading</h4>
<h5>h5. Bootstrap heading</h5>
<h6>h6. Bootstrap heading</h6>
.h1
到.h6
类也可用,用于当您想要匹配标题的字体样式但无法使用关联的 HTML 元素时。
h1. Bootstrap heading
h2. Bootstrap heading
h3. Bootstrap heading
h4. Bootstrap heading
h5. Bootstrap heading
h6. Bootstrap heading
<p class="h1">h1. Bootstrap heading</p>
<p class="h2">h2. Bootstrap heading</p>
<p class="h3">h3. Bootstrap heading</p>
<p class="h4">h4. Bootstrap heading</p>
<p class="h5">h5. Bootstrap heading</p>
<p class="h6">h6. Bootstrap heading</p>
自定义标题
使用包含的实用程序类从 Bootstrap 3 重新创建小型辅助标题文本。
Fancy display heading With faded secondary text
<h3>
Fancy display heading
<small class="text-body-secondary">With faded secondary text</small>
</h3>
禁用标题(Display headings)
传统的标题元素旨在最适合页面内容的内容。当您需要标题以突出显示时,请考虑使用显示标题 - 一种更大、更固执己见的标题样式。
<h1 class="display-1">Display 1</h1>
<h1 class="display-2">Display 2</h1>
<h1 class="display-3">Display 3</h1>
<h1 class="display-4">Display 4</h1>
<h1 class="display-5">Display 5</h1>
<h1 class="display-6">Display 6</h1>
显示标题通过 $display-font-sizes
Sass 映射和两个变量$display-font-weight
和$display-line-height
进行配置。
显示标题可通过两个变量自定义,即$display-font-family
和$display-font-style
。
$display-font-sizes: (
1: 5rem,
2: 4.5rem,
3: 4rem,
4: 3.5rem,
5: 3rem,
6: 2.5rem
);
$display-font-family: null;
$display-font-style: null;
$display-font-weight: 300;
$display-line-height: $headings-line-height;
突出(Lead)
通过添加.lead
使段落突出显示。
This is a lead paragraph. It stands out from regular paragraphs.
<p class="lead">
This is a lead paragraph. It stands out from regular paragraphs.
</p>
内联文本元素
常见内联 HTML5 元素的样式。
You can use the mark tag to highlight text.
This line of text is meant to be treated as deleted text.
This line of text is meant to be treated as no longer accurate.
This line of text is meant to be treated as an addition to the document.
This line of text will render as underlined.
This line of text is meant to be treated as fine print.
This line rendered as bold text.
This line rendered as italicized text.
<p>You can use the mark tag to <mark>highlight</mark> text.</p>
<p><del>This line of text is meant to be treated as deleted text.</del></p>
<p><s>This line of text is meant to be treated as no longer accurate.</s></p>
<p><ins>This line of text is meant to be treated as an addition to the document.</ins></p>
<p><u>This line of text will render as underlined.</u></p>
<p><small>This line of text is meant to be treated as fine print.</small></p>
<p><strong>This line rendered as bold text.</strong></p>
<p><em>This line rendered as italicized text.</em></p>
请注意,这些标记应用于语义目的:
<mark>
表示为参考或表示目的而标记或突出显示的文本。<small>
代表侧面评论和小字体,如版权和法律文本。<s>
表示不再相关或不再准确的元素。<u>
表示内联文本的范围,应以指示它具有非文本批注的方式呈现该文本。
如果要设置文本样式,应改用以下类:
.mark
将应用与<mark>
相同的样式。.small
将应用与<small>
相同的样式。.text-decoration-underline
将应用与<u>
相同的样式。.text-decoration-line-through
将应用与<s>
相同的样式。
虽然上面没有显示,但请随意在HTML5中使用<b>
和<i>
。 <b>
旨在突出显示单词或短语而不传达额外的重要性,而<i>
主要用于语音,技术术语等。
文本实用程序
使用我们的 text utilities 和 color utilities更改文本对齐方式、变换、样式、粗细、行高、装饰和颜色。
缩写
HTML 的 <abbr>
元素的风格化实现,用于缩写和首字母缩略词,以在悬停时显示扩展版本。缩写具有默认下划线,并获得帮助光标,以便在悬停时为辅助技术的用户提供其他上下文。
将.initialism
添加到缩写中,以获得稍小的字体大小。
attr
HTML
<p><abbr title="attribute">attr</abbr></p>
<p><abbr title="HyperText Markup Language" class="initialism">HTML</abbr></p>
块引用
用于引用文档中其他来源的内容块。将<blockquote class="blockquote">
括在任何 HTML 周围作为引用。
A well-known quote, contained in a blockquote element.
<blockquote class="blockquote">
<p>A well-known quote, contained in a blockquote element.</p>
</blockquote>
命名源
HTML 规范要求块引用属性放在 <blockquote>
之外。提供归因时,请将您的<blockquote>
包装在<figure>
中,并将<figcaption>
或块级元素(例如<p>
)与 .blockquote-footer
类一起使用。 请务必将源作品的名称也包装在<cite>
中。
<figure>
<blockquote class="blockquote">
<p>A well-known quote, contained in a blockquote element.</p>
</blockquote>
<figcaption class="blockquote-footer">
Someone famous in <cite title="Source Title">Source Title</cite>
</figcaption>
</figure>
对准
根据需要使用文本实用程序来更改块引用的对齐方式。
<figure class="text-center">
<blockquote class="blockquote">
<p>A well-known quote, contained in a blockquote element.</p>
</blockquote>
<figcaption class="blockquote-footer">
Someone famous in <cite title="Source Title">Source Title</cite>
</figcaption>
</figure>
<figure class="text-end">
<blockquote class="blockquote">
<p>A well-known quote, contained in a blockquote element.</p>
</blockquote>
<figcaption class="blockquote-footer">
Someone famous in <cite title="Source Title">Source Title</cite>
</figcaption>
</figure>
列表
无样式
删除列表项的默认list-style
和左边距(仅限直系子项)。这仅适用于直接子列表项,这意味着您还需要为任何嵌套列表添加类。
- This is a list.
- It appears completely unstyled.
- Structurally, it's still a list.
- However, this style only applies to immediate child elements.
- Nested lists:
- are unaffected by this style
- will still show a bullet
- and have appropriate left margin
- This may still come in handy in some situations.
<ul class="list-unstyled">
<li>This is a list.</li>
<li>It appears completely unstyled.</li>
<li>Structurally, it's still a list.</li>
<li>However, this style only applies to immediate child elements.</li>
<li>Nested lists:
<ul>
<li>are unaffected by this style</li>
<li>will still show a bullet</li>
<li>and have appropriate left margin</li>
</ul>
</li>
<li>This may still come in handy in some situations.</li>
</ul>
内嵌
删除列表的项目符号,并使用两个类的组合应用一些浅色的margin
,即.list-inline
和.list-inline-item
。
- This is a list item.
- And another one.
- But they're displayed inline.
<ul class="list-inline">
<li class="list-inline-item">This is a list item.</li>
<li class="list-inline-item">And another one.</li>
<li class="list-inline-item">But they're displayed inline.</li>
</ul>
说明列表对齐方式
使用网格系统的预定义类(或语义混合)水平对齐术语和描述。对于更长的术语,您可以选择添加.text-truncate
类以使用省略号截断文本。
- Description lists
- A description list is perfect for defining terms.
- Term
-
Definition for the term.
And some more placeholder definition text.
- Another term
- This definition is short, so no extra paragraphs or anything.
- Truncated term is truncated
- This can be useful when space is tight. Adds an ellipsis at the end.
- Nesting
-
- Nested definition list
- I heard you like definition lists. Let me put a definition list inside your definition list.
<dl class="row">
<dt class="col-sm-3">Description lists</dt>
<dd class="col-sm-9">A description list is perfect for defining terms.</dd>
<dt class="col-sm-3">Term</dt>
<dd class="col-sm-9">
<p>Definition for the term.</p>
<p>And some more placeholder definition text.</p>
</dd>
<dt class="col-sm-3">Another term</dt>
<dd class="col-sm-9">This definition is short, so no extra paragraphs or anything.</dd>
<dt class="col-sm-3 text-truncate">Truncated term is truncated</dt>
<dd class="col-sm-9">This can be useful when space is tight. Adds an ellipsis at the end.</dd>
<dt class="col-sm-3">Nesting</dt>
<dd class="col-sm-9">
<dl class="row">
<dt class="col-sm-4">Nested definition list</dt>
<dd class="col-sm-8">I heard you like definition lists. Let me put a definition list inside your definition list.</dd>
</dl>
</dd>
</dl>
响应式字体大小
在 Bootstrap 5 中,我们默认启用了响应式字体大小,允许文本在设备和视口大小之间更自然地缩放。看看RFS页面 以了解它是如何工作的。
CSS
Sass 变量
标题有一些用于大小和间距的专用变量。
$headings-margin-bottom: $spacer * .5;
$headings-font-family: null;
$headings-font-style: null;
$headings-font-weight: 500;
$headings-line-height: 1.2;
$headings-color: null;
此处和 Reboot 中介绍的杂项排版元素也有专用变量。
$lead-font-size: $font-size-base * 1.25;
$lead-font-weight: 300;
$small-font-size: .875em;
$sub-sup-font-size: .75em;
// fusv-disable
$text-muted: var(--#{$prefix}secondary-color); // Deprecated in 5.3.0
// fusv-enable
$initialism-font-size: $small-font-size;
$blockquote-margin-y: $spacer;
$blockquote-font-size: $font-size-base * 1.25;
$blockquote-footer-color: $gray-600;
$blockquote-footer-font-size: $small-font-size;
$hr-margin-y: $spacer;
$hr-color: inherit;
// fusv-disable
$hr-bg-color: null; // Deprecated in v5.2.0
$hr-height: null; // Deprecated in v5.2.0
// fusv-enable
$hr-border-color: null; // Allows for inherited colors
$hr-border-width: var(--#{$prefix}border-width);
$hr-opacity: .25;
$legend-margin-bottom: .5rem;
$legend-font-size: 1.5rem;
$legend-font-weight: null;
$dt-font-weight: $font-weight-bold;
$list-inline-padding: .5rem;
$mark-padding: .1875em;
$mark-bg: $yellow-100;
Sass 混合
没有专门的排版混合,但 Bootstrap 确实使用了 响应式字体大小调整 (RFS)。