导航栏
Bootstrap 强大的响应式导航标题导航栏的文档和示例。包括对品牌、导航等的支持,包括对我们的折叠插件的支持。
这个怎么运作
在开始使用导航栏之前,您需要了解以下内容:
- 导航栏需要一个用于响应式折叠和
.navbar
配色方案类的包装。.navbar-expand{-sm|-md|-lg|-xl|-xxl}
- 默认情况下,导航栏及其内容是流动的。更改容器以不同方式限制其水平宽度。
- 使用我们的间距和flex实用程序类来控制导航栏中的间距和对齐方式。
- 导航栏默认情况下是响应式的,但您可以轻松修改它们以更改它。响应行为取决于我们的 Collapse JavaScript 插件。
- 通过使用
<nav>
元素来确保可访问性,或者,如果使用更通用的元素,例如 a<div>
,则将 a 添加role="navigation"
到每个导航栏,以明确将其标识为辅助技术用户的标志性区域。 - 通过
aria-current="page"
用于当前页面或aria-current="true"
集合中的当前项目来指示当前项目。
prefers-reduced-motion
媒体查询。请参阅
我们可访问性文档的减少运动部分。
支持的内容
导航栏内置了对少数子组件的支持。根据需要从以下选项中进行选择:
.navbar-brand
为您的公司、产品或项目名称。.navbar-nav
用于全高度和轻量级导航(包括对下拉菜单的支持)。.navbar-toggler
用于我们的折叠插件和其他导航切换行为。- 适用于任何表单控件和操作的 Flex 和间距实用程序。
.navbar-text
用于添加垂直居中的文本字符串。.collapse.navbar-collapse
用于按父断点分组和隐藏导航栏内容。- 添加一个可选项
.navbar-scroll
来设置max-height
和滚动扩展的导航栏内容。
这是响应式轻主题导航栏中包含的所有子组件的示例,该导航栏会在lg
(大)断点处自动折叠。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
此示例使用背景( bg-light
) 和间距( my-2
, my-lg-0
, me-sm-0
, my-sm-0
) 实用程序类。
牌
.navbar-brand
可以应用于大多数元素,但锚点效果最好,因为某些元素可能需要实用程序类或自定义样式。
文本
在类的元素中添加您的文本.navbar-brand
。
<!-- As a link -->
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
</div>
</nav>
<!-- As a heading -->
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<span class="navbar-brand mb-0 h1">Navbar</span>
</div>
</nav>
图片
您可以将 中的文本替换.navbar-brand
为<img>
.
<nav class="navbar navbar-light bg-light">
<div class="container">
<a class="navbar-brand" href="#">
<img src="/docs/5.0/assets/brand/bootstrap-logo.svg" alt="" width="30" height="24">
</a>
</div>
</nav>
图片和文字
您还可以使用一些其他实用程序同时添加图像和文本。注意.d-inline-block
和.align-text-top
的添加<img>
。
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">
<img src="/docs/5.0/assets/brand/bootstrap-logo.svg" alt="" width="30" height="24" class="d-inline-block align-text-top">
Bootstrap
</a>
</div>
</nav>
导航
导航栏导航链接建立在我们的.nav
选项之上,带有自己的修饰符类,并且需要使用切换器类来实现正确的响应式样式。导航栏中的导航也将占用尽可能多的水平空间,以保持导航栏内容安全对齐。
添加.active
类 on.nav-link
以指示当前页面。
请注意,您还应该aria-current
在 active 上添加属性.nav-link
。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNav">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
</div>
</div>
</nav>
而且因为我们为导航使用类,如果您愿意,您可以完全避免使用基于列表的方法。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavAltMarkup">
<div class="navbar-nav">
<a class="nav-link active" aria-current="page" href="#">Home</a>
<a class="nav-link" href="#">Features</a>
<a class="nav-link" href="#">Pricing</a>
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</div>
</div>
</div>
</nav>
您还可以在导航栏中使用下拉菜单。下拉菜单需要一个包装元素来定位,因此请务必使用单独和嵌套的元素,.nav-item
如下.nav-link
所示。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Dropdown link
</a>
<ul class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
</ul>
</div>
</div>
</nav>
形式
在导航栏中放置各种表单控件和组件:
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</nav>
.navbar
使用 flex 布局的直接子元素,默认为justify-content: space-between
. 根据需要使用其他flex 实用程序来调整此行为。
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand">Navbar</a>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</nav>
输入组也可以工作。如果您的导航栏是一个完整的表单,或者大部分是一个表单,您可以使用该<form>
元素作为容器并保存一些 HTML。
<nav class="navbar navbar-light bg-light">
<form class="container-fluid">
<div class="input-group">
<span class="input-group-text" id="basic-addon1">@</span>
<input type="text" class="form-control" placeholder="Username" aria-label="Username" aria-describedby="basic-addon1">
</div>
</form>
</nav>
这些导航栏表单也支持各种按钮。这也是一个很好的提醒,垂直对齐实用程序可用于对齐不同大小的元素。
<nav class="navbar navbar-light bg-light">
<form class="container-fluid justify-content-start">
<button class="btn btn-outline-success me-2" type="button">Main button</button>
<button class="btn btn-sm btn-outline-secondary" type="button">Smaller button</button>
</form>
</nav>
文本
导航栏可能会在.navbar-text
. 此类调整文本字符串的垂直对齐和水平间距。
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<span class="navbar-text">
Navbar text with an inline element
</span>
</div>
</nav>
根据需要与其他组件和实用程序混合搭配。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar w/ text</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarText" aria-controls="navbarText" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarText">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
</ul>
<span class="navbar-text">
Navbar text with an inline element
</span>
</div>
</div>
</nav>
配色方案
background-color
由于主题类和实用程序的结合,对导航栏进行主题化从未如此简单。选择.navbar-light
用于浅色背景色或.navbar-dark
深色背景色。然后,使用.bg-*
实用程序进行自定义。
<nav class="navbar navbar-dark bg-dark">
<!-- Navbar content -->
</nav>
<nav class="navbar navbar-dark bg-primary">
<!-- Navbar content -->
</nav>
<nav class="navbar navbar-light" style="background-color: #e3f2fd;">
<!-- Navbar content -->
</nav>
容器
虽然它不是必需的,但您可以将导航栏包裹在 a.container
中以使其在页面上居中 - 尽管请注意仍然需要内部容器。或者,您可以在 内添加一个容器,以仅将固定或静态顶部导航栏.navbar
的内容居中。
<div class="container">
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
</div>
</nav>
</div>
使用任何响应式容器来更改导航栏中内容的显示宽度。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-md">
<a class="navbar-brand" href="#">Navbar</a>
</div>
</nav>
放置
使用我们的位置实用程序将导航栏放置在非静态位置。选择固定到顶部、固定到底部或粘到顶部(随页面滚动,直到它到达顶部,然后停留在那里)。固定导航栏使用position: fixed
,这意味着它们是从 DOM 的正常流程中拉出的,并且可能需要自定义 CSS(例如,padding-top
在 上<body>
)以防止与其他元素重叠。
另请注意,并不是每个浏览器都完全支持.sticky-top
使用position: sticky
。
<nav class="navbar navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Default</a>
</div>
</nav>
<nav class="navbar fixed-top navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Fixed top</a>
</div>
</nav>
<nav class="navbar fixed-bottom navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Fixed bottom</a>
</div>
</nav>
<nav class="navbar sticky-top navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Sticky top</a>
</div>
</nav>
滚动
添加.navbar-nav-scroll
到.navbar-nav
(或其他导航栏子组件)以在折叠导航栏的可切换内容中启用垂直滚动。默认情况下,滚动开始于75vh
(或视口高度的 75%),但您可以使用本地 CSS 自定义属性--bs-navbar-height
或自定义样式覆盖它。当导航栏展开时,在较大的视口中,内容将像在默认导航栏中一样显示。
请注意,这种行为有一个潜在的缺点,即overflow
设置overflow-y: auto
时(需要在此处滚动内容),overflow-x
相当于auto
,它将裁剪一些水平内容。
.navbar-nav-scroll
这是一个使用with的示例导航栏style="--bs-scroll-height: 100px;"
,带有一些额外的边距实用程序以获得最佳间距。
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar scroll</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarScroll" aria-controls="navbarScroll" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarScroll">
<ul class="navbar-nav me-auto my-2 my-lg-0 navbar-nav-scroll" style="--bs-scroll-height: 100px;">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarScrollingDropdown" role="button" data-bs-toggle="dropdown" aria-expanded="false">
Link
</a>
<ul class="dropdown-menu" aria-labelledby="navbarScrollingDropdown">
<li><a class="dropdown-item" href="#">Action</a></li>
<li><a class="dropdown-item" href="#">Another action</a></li>
<li><hr class="dropdown-divider"></li>
<li><a class="dropdown-item" href="#">Something else here</a></li>
</ul>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Link</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
响应行为
导航栏可以使用.navbar-toggler
、.navbar-collapse
和.navbar-expand{-sm|-md|-lg|-xl|-xxl}
类来确定其内容何时折叠在按钮后面。结合其他实用程序,您可以轻松选择何时显示或隐藏特定元素。
对于从不折叠.navbar-expand
的导航栏,在导航栏上添加类。对于总是折叠的导航栏,不要添加任何.navbar-expand
类。
切换器
导航栏切换器默认是左对齐的,但是如果它们跟随像 a 这样的兄弟元素.navbar-brand
,它们会自动对齐到最右边。反转标记将反转切换器的位置。以下是不同切换样式的示例。
.navbar-brand
在最小断点处没有显示:
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTogglerDemo01">
<a class="navbar-brand" href="#">Hidden brand</a>
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
左侧显示品牌名称,右侧显示切换器:
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTogglerDemo02">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
左侧是切换器,右侧是品牌名称:
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container-fluid">
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarTogglerDemo03" aria-controls="navbarTogglerDemo03" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<a class="navbar-brand" href="#">Navbar</a>
<div class="collapse navbar-collapse" id="navbarTogglerDemo03">
<ul class="navbar-nav me-auto mb-2 mb-lg-0">
<li class="nav-item">
<a class="nav-link active" aria-current="page" href="#">Home</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Disabled</a>
</li>
</ul>
<form class="d-flex">
<input class="form-control me-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success" type="submit">Search</button>
</form>
</div>
</div>
</nav>
外部内容
有时您想使用折叠插件来触发结构上位于.navbar
. 因为我们的插件适用于id
和data-bs-target
匹配,所以很容易做到!
<div class="collapse" id="navbarToggleExternalContent">
<div class="bg-dark p-4">
<h5 class="text-white h4">Collapsed content</h5>
<span class="text-muted">Toggleable via the navbar brand.</span>
</div>
</div>
<nav class="navbar navbar-dark bg-dark">
<div class="container-fluid">
<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarToggleExternalContent" aria-controls="navbarToggleExternalContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
</div>
</nav>
执行此操作时,我们建议您添加额外的 JavaScript,以便在容器打开时以编程方式将焦点移至容器。否则,键盘用户和辅助技术用户可能很难找到新显示的内容 - 特别是如果打开的容器位于文档结构中的切换器之前。我们还建议确保切换器具有aria-controls
指向id
内容容器的属性。从理论上讲,这允许辅助技术用户直接从切换器跳转到它控制的容器——但目前对此的支持相当不完整。
萨斯
变量
$navbar-padding-y: $spacer * .5;
$navbar-padding-x: null;
$navbar-nav-link-padding-x: .5rem;
$navbar-brand-font-size: $font-size-lg;
// Compute the navbar-brand padding-y so the navbar-brand will have the same height as navbar-text and nav-link
$nav-link-height: $font-size-base * $line-height-base + $nav-link-padding-y * 2;
$navbar-brand-height: $navbar-brand-font-size * $line-height-base;
$navbar-brand-padding-y: ($nav-link-height - $navbar-brand-height) * .5;
$navbar-brand-margin-end: 1rem;
$navbar-toggler-padding-y: .25rem;
$navbar-toggler-padding-x: .75rem;
$navbar-toggler-font-size: $font-size-lg;
$navbar-toggler-border-radius: $btn-border-radius;
$navbar-toggler-focus-width: $btn-focus-width;
$navbar-toggler-transition: box-shadow .15s ease-in-out;
$navbar-dark-color: rgba($white, .55);
$navbar-dark-hover-color: rgba($white, .75);
$navbar-dark-active-color: $white;
$navbar-dark-disabled-color: rgba($white, .25);
$navbar-dark-toggler-icon-bg: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-dark-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>");
$navbar-dark-toggler-border-color: rgba($white, .1);
$navbar-light-color: rgba($black, .55);
$navbar-light-hover-color: rgba($black, .7);
$navbar-light-active-color: rgba($black, .9);
$navbar-light-disabled-color: rgba($black, .3);
$navbar-light-toggler-icon-bg: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'><path stroke='#{$navbar-light-color}' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/></svg>");
$navbar-light-toggler-border-color: rgba($black, .1);
$navbar-light-brand-color: $navbar-light-active-color;
$navbar-light-brand-hover-color: $navbar-light-active-color;
$navbar-dark-brand-color: $navbar-dark-active-color;
$navbar-dark-brand-hover-color: $navbar-dark-active-color;
环形
响应式导航栏展开/折叠类(例如.navbar-expand-lg
)与$breakpoints
地图组合并通过scss/_navbar.scss
.
// Generate series of `.navbar-expand-*` responsive classes for configuring
// where your navbar collapses.
.navbar-expand {
@each $breakpoint in map-keys($grid-breakpoints) {
$next: breakpoint-next($breakpoint, $grid-breakpoints);
$infix: breakpoint-infix($next, $grid-breakpoints);
// stylelint-disable-next-line scss/selector-no-union-class-name
&#{$infix} {
@include media-breakpoint-up($next) {
flex-wrap: nowrap;
justify-content: flex-start;
.navbar-nav {
flex-direction: row;
.dropdown-menu {
position: absolute;
}
.nav-link {
padding-right: $navbar-nav-link-padding-x;
padding-left: $navbar-nav-link-padding-x;
}
}
.navbar-nav-scroll {
overflow: visible;
}
.navbar-collapse {
display: flex !important; // stylelint-disable-line declaration-no-important
flex-basis: auto;
}
.navbar-toggler {
display: none;
}
}
}
}
}