目录搜索
Getting startedAccessibility(无障碍)Browsers and devices(浏览器和设备)Build tools(构建工具)Contents(内容)Download(下载)JavaScriptTheming Bootstrap(主题Bootstrap)WebpackComponents: AlertsAlerts(警报)Components: BadgesBadges(徽章)Components: BreadcrumbBreadcrumbComponents: Button groupButton group(按钮组)Components: ButtonsButtons(按钮)Components: CardsComponents: CarouselCards(卡)Carousel(圆盘传送带)Components: CollapseCollapse(折叠)Components: DropdownsDropdowns(下拉菜单)Components: FormsForms(表单)Components: Input groupInput group(输入群组)Components: Input groupJumbotron(广告大屏幕)Components: List groupList group(列表组)Components: ModalModal(互动视窗)Components: NavbarNavbar(导航栏)Components: NavsNavs(导航栏)Components: PaginationPagination(分页)Components: PopoversPopovers(弹出框)Components: ProgressProgress(进度条)Components: ScrollspyScrollspy(滚动监听)Components: TooltipsTooltips(提示工具)ContentCode(代码)Figures(图片区)Images(图片)Reboot(重置)Tables(表格)Typography(排版)LayoutGrid(网格)Layout(布局)Media object(多媒体对象)Utilities for layout(排版通用类别)MigrationMigrating to v4(迁移到v4)UtilitiesBorders(边框)Clearfix(清除浮动)Close icon(关闭图标)Colors(颜色)Display property(显示属性)Embeds(内嵌)Flex(弹性)Float(浮动)Image replacement(图像替换)Position(位置)Screenreaders(荧幕阅读器)Sizing(尺寸)Spacing(间隔)Text(文本)Vertical alignment(垂直对齐)Visibility(能见度)
文字

使用屏幕阅读器实用程序隐藏除屏幕阅读器以外的所有设备上的元素

隐藏所有设备的元素,除了屏幕阅读器使用.sr-only.sr-only.sr-only-focusable焦点合并时再次显示元素(例如,通过键盘用户)。也可以用作mixin。

<a class="sr-only sr-only-focusable" href="#content">Skip to main content</a>
// Usage as a mixin.skip-navigation {
  @include sr-only;
  @include sr-only-focusable;}
上一篇:下一篇: