目前在我的导航栏上工作，并希望搜索栏的宽度更宽，以便导航栏看起来不太分割。我已经玩过CSS的宽度并且没有任何运气。我也在这个网站上查看了类似的问题，但没有找到解决方案。请参阅下面的代码。
<nav id="mainNav" class="navbar navbar-default navbar-fixed-top">
<div class="container-fluid">
<!-- Brand and toggle get grouped for better mobile display -->
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="navbar-brand page-scroll" href="#page-top">HELLO</a>
</div>
<!-- SEARCH FORM -->
<form id="navsearch" class="navbar-form pull-right" role="search" action="" method="post">
<div class="input-group" display="inline">
<input name="search" type="text" class="form-control" placeholder="Search">
<span class="input-group-btn">
<button class="btn btn-default btn" name="submit" class="btn btn-lg" type="submit">
<span class="glyphicon glyphicon-search" ></span>
</button>
</div>
</form>
<!--Button to Upload Information -->
<div class="container text-center">
<div class="call-to-action">
<a href="#myModal" role="button" data-toggle="modal" class="btn btn-default btn-xl wow tada">Upload Your Story</a>
<div class="modal fade" id="myModal">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button class="close" data-dismiss="modal">×</button>
<h4 class="modal-title">Submit</h4>
</div><!-- end modal-header -->
<div class="modal-body">
<h4></h4>
<p><small class="text-muted">Tell us</small></p>
<form action="forms.php" method="post" class="form-horizontal">
<div class="form-group">
<label class="col-lg-2 control-label" name="name" >Name</label>
<div class="col-lg-10">
<input class="form-control" name="name" placeholder="Name" type="text">
</div>
</div>
<div class="form-group" method="post">
<label class="col-lg-2 control-label" name="yourStory">Your Tell All</label>
<div class="col-lg-10">
<textarea class="form-control" name="yourStory" placeholder="Tell us your story" rows="3"></textarea>
</div>
<div class="form-group">
<label class="col-lg-2" for="inputFile">File input</label>
<input type="file" name="inputfile" id="inputFile">
</div>
<br>
<div class="form-group">
<div class="col-lg-10">
<button name="submit" class="btn btn-success active" type="submit">Submit</button>
</div>
</div>
</form>
</div><!-- end modal-body -->
<div class="modal-footer">
<button class="btn btn-default" data-dismiss="modal" type="button">Close</button> <button class="btn btn-primary" type="button">Save changes</button>
</div><!-- end modal-footer -->
</div><!-- end modal-content -->
</div><!-- end modal-dialog -->
</div><!-- end myModal -->
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
<ul class="nav navbar-nav navbar-right">
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container-fluid -->
CSS
/* --------------------------------------
Navbar
-------------------------------------- */
.navbar-default {
border-color: rgba(255,255,255, 0.7);
font-family: 'Open Sans','Helvetica Neue',Arial,sans-serif;
background-color: rgba(255,255,255, 0.7);;
-webkit-transition: all .5s;
-moz-transition: all .5s;
transition: all .5s;
}
#searchInput {
width: 200px;
}
.navbar-brand {
padding: 13px 15px;
}
#mainNav{
padding-top: 10px;
padding-left: 20px;
}
#search{
width: 500px;
答案 0 :(得分：0)
这可能会有所帮助，因为它是设置导航栏的另一种方法，因此您可以将搜索输入调整为有意义的内容并使用媒体查询。
*我也调整了你的模态，因为它位于起点并且在其中有一些错误等。参见工作示例。
body,
html {
margin-top: 60px;
}
.navbar.navbar-custom {
border: none;
background: white;
-webkit-box-shadow: 5px 5px 5px 0px rgba(50, 50, 50, 0.15);
-moz-box-shadow: 5px 5px 5px 0px rgba(50, 50, 50, 0.15);
box-shadow: 5px 5px 5px 0px rgba(50, 50, 50, 0.15);
}
.navbar.navbar-custom .form-search {
right: 0;
top: 0px;
position: fixed;
margin: 0;
border: none;
}
.navbar.navbar-custom .form-search .search-box {
height: 50px;
border-radius: 0;
border: none;
width: 700px;
box-shadow: none;
outline: none;
}
.navbar.navbar-custom .btn.btn-search {
height: 50px;
border-radius: 0;
border: none;
background: grey;
color: white;
}
.navbar.navbar-custom .btn.btn-upload {
float: 0;
height: 50px;
border-radius: 0;
border: none;
background: #a94442;
color: white;
}
.navbar.navbar-custom .navbar-header .navbar-toggle,
.navbar.navbar-custom .navbar-header .navbar-toggle:hover,
.navbar.navbar-custom .navbar-header .navbar-toggle:focus {
background: none;
border: none;
}
.navbar.navbar-custom .navbar-header span.icon-bar {
background: #444;
}
@media (min-width: 768px) {
.navbar.navbar-custom {
height: 50px;
}
}
@media (max-width: 992px) {
.navbar.navbar-custom .form-search .search-box {
width: 500px;
}
}
@media (max-width: 767px) {
.navbar.navbar-custom .form-search {
right: 70px;
}
.navbar.navbar-custom .form-search .search-box {
width: 225px;
}
}
@media (max-width: 480px) {
.navbar.navbar-custom .navbar-brand {
display: none;
}
.navbar.navbar-custom .form-search .search-box {
width: 70%;
}
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css" rel="stylesheet" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css" rel="stylesheet" />
<nav class="navbar navbar-default navbar-custom navbar-fixed-top">
<div class="container-fluid">
<div class="navbar-header">
<button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-nav" aria-expanded="false"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span>
</button> <a class="navbar-brand" href="#">HELLO</a>
</div>
<div class="collapse navbar-collapse" id="bs-nav">
<ul class="nav navbar-nav">
<li><a href="#">Home</a>
</li>
</ul>
</div>
</div>
<form class="form-search">
<div class="input-group"> <span class="input-group"> <span class="input-group-btn" role="group" aria-label="...">
<button type="button" href="#myModal" data-toggle="modal" class="btn btn-upload">Upload</button>
</span>
<input type="text" class="form-control search-box" placeholder="Search"> <span class="input-group-btn" role="group" aria-label="...">
<button type="button" class="btn btn-search"><i class="fa fa-search"></i></button>
</span> </span>
</div>
</form>
</nav>
<div class="modal fade" id="myModal">
<div class="modal-dialog">
<div class="modal-content">
<div class="modal-header">
<button class="close" data-dismiss="modal">×</button>
<h4 class="modal-title">Submit</h4>
</div>
<!-- end modal-header -->
<div class="modal-body"> <small class="text-muted">Tell us</small>
<form action="forms.php" method="post" class="form-horizontal">
<label for="name" name="name">Name</label>
<input class="form-control" name="name" placeholder="Name" type="text">
<br>
<label for="yourStory" name="yourStory">Your Tell All</label>
<textarea class="form-control" name="yourStory" placeholder="Tell us your story" rows="3"></textarea>
<br>
<label for="inputFile">File input</label>
<input type="file" name="inputfile" id="inputFile">
<br>
<button name="submit" class="btn btn-success active" type="submit">Submit</button>
</form>
</div>
<div class="modal-footer">
<button class="btn btn-default" data-dismiss="modal" type="button">Close</button>
<button class="btn btn-primary" type="button">Save changes</button>
</div>
</div>
</div>
</div>
<!-- end myModal -->
<div class="container">
<div class="alert alert-info">Yo</div>
</div>