bootstrapのNavbarの配置の仕方で困ったとき
Bootstrap 4 Navbar Center Links Examples on Codeply より
<!--
1 - Navbar with brand left, centered links and right aligned links.
The center links collapse into the mobile menu and rightside links
show underneath
-->
<nav class="navbar navbar-expand-md navbar-dark bg-primary">
<div class="d-flex w-50 order-0">
<a class="navbar-brand mr-1" href="#">Bootstrap 4</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#collapsingNavbar">
<span class="navbar-toggler-icon"></span>
</button>
</div>
<div class="navbar-collapse collapse justify-content-center order-2" id="collapsingNavbar">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Link <span class="sr-only">Home</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
<span class="navbar-text small text-truncate mt-1 w-50 text-right order-1 order-md-last">always show</span>
</nav>
<!--
2 - Navbar with brand left, links on center and right that collapse in the vertical mobile
menu
-->
<nav class="navbar navbar-light navbar-expand-md bg-light justify-content-center">
<a href="/" class="navbar-brand mr-0">Brand</a>
<button class="navbar-toggler ml-1" type="button" data-toggle="collapse" data-target="#collapsingNavbar2">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse justify-content-between align-items-center w-100" id="collapsingNavbar2">
<ul class="navbar-nav mx-auto text-center">
<li class="nav-item active">
<a class="nav-link" href="#">Link <span class="sr-only">Home</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
<ul class="nav navbar-nav flex-row justify-content-center flex-nowrap">
<li class="nav-item"><a class="nav-link" href=""><i class="fa fa-facebook mr-1"></i></a> </li>
<li class="nav-item"><a class="nav-link" href=""><i class="fa fa-twitter"></i></a> </li>
</ul>
</div>
</nav>
<!--
3 - Navbar with brand center, links on left and right that all collapse into the vertical mobile
menu
-->
<nav class="navbar navbar-dark navbar-expand-md bg-success justify-content-between">
<div class="container-fluid">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target=".dual-nav">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse dual-nav w-50 order-1 order-md-0">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link pl-0" href="#">Home <span class="sr-only">Home</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
<a href="/" class="navbar-brand mx-auto d-block text-center order-0 order-md-1 w-25">Brand</a>
<div class="navbar-collapse collapse dual-nav w-50 order-2">
<ul class="nav navbar-nav ml-auto">
<li class="nav-item"><a class="nav-link" href=""><i class="fa fa-twitter"></i></a></li>
<li class="nav-item"><a class="nav-link" href=""><i class="fa fa-github"></i></a></li>
</ul>
</div>
</div>
</nav>
<!--
4 - Navbar with brand and links left and toggler right
The links collapse into the mobile menu
-->
<nav class="navbar navbar-expand-md navbar-dark bg-info">
<a href="/" class="navbar-brand">Brand</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar4">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse" id="navbar4">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Link <span class="sr-only">Home</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</nav>
<!--
5 - Navbar with brand and links left, full width search form and toggler right
The links collapse into the mobile menu
-->
<nav class="navbar navbar-expand-md navbar-light bg-light">
<a href="/" class="navbar-brand">Brand</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar5">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse justify-content-stretch" id="navbar5">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Link <span class="sr-only">Home</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
<form class="ml-3 my-auto d-inline w-100">
<div class="input-group">
<input type="text" class="form-control border-right-0" placeholder="...">
<div class="input-group-append">
<button class="btn btn-outline-primary border-left-0" type="button">GO</button>
</div>
</div>
</form>
</div>
</nav>
<!--
6 - Navbar with brand left, links left and right, toggler right
The links collapse into the mobile menu
-->
<nav class="navbar navbar-expand-md navbar-dark bg-danger">
<a href="/" class="navbar-brand">Brand</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar6">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse justify-content-stretch" id="navbar6">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Link <span class="sr-only">Home</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</nav>
<!--
7 - Navbar with brand left, links right, toggler right
The links collapse into the mobile menu
-->
<nav class="navbar navbar-expand-md navbar-dark bg-dark">
<a href="/" class="navbar-brand">Bootstrap 4</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar7">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse justify-content-stretch" id="navbar7">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</nav>
<!--
8 - Navbar with links center and right, toggler right
The links collapse into the mobile menu
-->
<nav class="navbar navbar-expand-sm navbar-dark bg-primary">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar8">
<span class="navbar-toggler-icon"></span>
</button>
<span class="navbar-text"> </span>
<div class="navbar-collapse collapse" id="navbar8">
<ul class="navbar-nav abs-center-x">
<li class="nav-item">
<a class="nav-link" href="#">Center</a>
</li>
</ul>
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</nav>
<!--
9 - Navbar in container with links center and right, toggler right
The links collapse into the mobile menu
-->
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<div class="container">
<a href="/" class="navbar-brand">Bootstrap 4</a>
<button class="navbar-toggler float-right" type="button" data-toggle="collapse" data-target="#navbar9">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse" id="navbar9">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</div>
</nav>
<!--
10 - Navbar justified centered links full width
-->
<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
<div class="container">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbar10">
<span class="navbar-toggler-icon"></span>
</button>
<div class="navbar-collapse collapse" id="navbar10">
<ul class="navbar-nav nav-fill w-100">
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="//codeply.com">Codeply</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</div>
</nav>
<!-- 11 - contained in center example -->
<nav class="navbar navbar-expand-sm navbar-light bg-light" data-toggle="affix">
<div class="mx-auto d-sm-flex d-block flex-sm-nowrap">
<a class="navbar-brand" href="#">Brand</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarsExample11" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse text-center" id="navbarsExample11">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Link</a>
</li>
</ul>
</div>
</div>
</nav>
<!-- 11 - contained in center example -->
<nav class="navbar navbar-expand-sm bg-dark navbar-dark justify-content-end">
<a class="navbar-brand" href="#">Brand</a>
<button class="btn btn-success ml-auto mr-2">Always Show</button>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse flex-grow-0" id="navbarSupportedContent">
<ul class="navbar-nav text-right">
<li class="nav-item active">
<a class="nav-link" href="#">Right Link</a>
</li>
<li class="nav-item active">
<a class="nav-link" href="#">Right Link</a>
</li>
</ul>
</div>
</nav>
<!--
12 - Navbar left right text and icons
-->
<nav class="navbar navbar-dark navbar-expand bg-primary justify-content-between">
<div class="container-fluid">
<ul class="navbar-nav">
<li class="nav-item text-center">
<a href="#" class="nav-link" data-toggle="modal" data-target="#"><span class="fa fa-map"></span><span class="d-none d-sm-inline d-xl-block px-1">Map</span></a>
</li>
<li class="nav-item dropdown text-center">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"><span class="fa fa-list"></span><span class="d-xl-block d-none"></span><span class="d-none d-sm-inline px-1">Dropdown</span> </a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
<ul class="nav navbar-nav">
<li class="nav-item text-center" id="signup-btn">
<a href="#" class="nav-link" data-toggle="modal" data-target="#"><span class="fa fa-user"></span><span class="d-none d-sm-inline d-xl-block px-1">Sign Up</span></a>
</li>
<li class="nav-item text-center" id="login-btn">
<a href="#" class="nav-link" data-toggle="modal" data-target="#"><span class="fa fa-sign-in"></span><span class="d-none d-sm-inline d-xl-block px-1">Log In</span></a>
</li>
</ul>
</div>
</nav>
<div class="text-center my-3 small">viewport center</div>