UI - Navbar (Horizontal Menu|Navigation Header) in Bootstrap
In Bootstrap 4, the Navbar is responsive by default and utilizes flexbox to make alignment of Navbar content much easier. The navbar-header class has been removed from Bootstrap 4, and the container-fluid is no longer required for a full width Navbar.
Bootstrap doesn't know how much space the content in your navbar needs, therefore you might run into issues with content wrapping into a second row. To resolve this, you can:
They begin collapsed (and are toggleable) in mobile views and become horizontal as the available viewport width increases.
The @grid-float-breakpoint variable of the Less source control when the navbar collapses/expands. The default value is 768px (the smallest “small” or “tablet” screen).
The fixed navbar will overlay your other content, unless you add padding to the top or bottom of the
.See Web - How to style a page to allow a fixed top header (Navbar / Menu) ?
v3. Both classes will add a CSS float.
Same as pull-left and pull-right but scoped to media queries for handling of navbar components across device sizes.
Example:
@media (min-width: 768px) {
.navbar-left {
float: left !important;
}
.navbar-right {
float: right !important;
margin-right: -15px;
}
.navbar-right ~ .navbar-right {
margin-right: 0;
}
}
Nav is the combination of a nav element and a child container element to center and pad th content
Nav ClassName:
Child Container className (to center and pad navbar content):
Custom styles for responsive collapsing and toggling of navbar contents powered by the collapse Bootstrap JavaScript plugin.
<a class="navbar-brand" href="#">
<img alt="Brand" src="...">
</a>
See UI - DropDown
Example:
<!-- Add any additional bootstrap header items. This is a drop-down from an icon -->
<li class="dropdown navbar-right">
<a href="#" data-toggle="dropdown" style="color:#777; margin-top: 5px;" class="dropdown-toggle">
<span class="glyphicon glyphicon-user"></span><b class="caret"></b></a>
<ul class="dropdown-menu">
<li>
<a href="/users/id" title="Profile">Profile</a>
</li>
<li>
<a href="/logout" title="Logout">Logout </a>
</li>
</ul>
</li>
Custom navbar navigation (doesn't require nav, but does make use of nav-link.
See: https://www.codeply.com/go/cxXqBnGrPx
Navbars require:
<!-- Navbars require a wrapping .navbar with .navbar-toggleable-* for responsive collapsing and color scheme classes.-->
<nav class="navbar navbar-inverse bg-inverse navbar-toggleable-md">
<button class="navbar-toggler navbar-toggler-right" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo01" aria-controls="navbarTogglerDemo01" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<!-- Will not collapse and stay inline -->
<div class="navbar-nav flex-row">
<a class="navbar-brand" href="#">Navbar</a>
<a class="nav-link d-inline-flex p-2" href="#">Link</a>
<a class="nav-link d-inline-flex p-2 disabled" href="#">Disabled</a>
</div>
<!-- Will collapse -->
<div class="collapse navbar-collapse" id="navbarTogglerDemo01">
<ul class="navbar-nav mr-auto mt-2 mt-lg-0">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#">Disabled</a>
</li>
</ul>
</div>
</nav>