我正在创建一个带引导程序的导航栏。它有三个元素:左右两个图像,中间有一个搜索区域。这是我目前的代码:
HTML:
<nav class="navbar navbar-default navbar-fixed-top">
<div class="container">
<form class="navbar-form navbar" role="search">
<div class="input-group">
<input type="text" class="form-control" placeholder="Suche" name="suche">
<div class="input-group-btn">
<button class="btn btn-default" type="submit"><i class="glyphicon glyphicon-search"></i></button>
</div>
</div>
</form>
<div class="nav navbar-nav navbar-left">
<a href="#"><img src="../images/ITPlattformLogo.png" alt="" height="80"></a>
</div>
<div class="nav navbar-nav navbar-right">
<a href="http://www.hwr-berlin.de/home/" class="navbar-left"><img src="../images/HWRLogo.jpg" alt="" height="80"></a>
</div>
</div>
</nav>
CSS:
.navbar-form
{
position: absolute;
width: 100%;
left: 0;
text-align: center;
padding-top: 14px;
}
对于较小的屏幕尺寸,我希望将一行中的两个图像和全屏宽度下面的第二行中的搜索字段。我怎么能这样做?
答案 0 :(得分:0)
一种方法是使用媒体查询调整元素位置。
// when navbar is horizontal
@media (min-width: 768px) {
.navbar-form
{
position: absolute;
width: 100%;
left: 0;
text-align: center;
padding-top: 14px;
}
}
// when navbar is vertical
@media (max-width: 768px) {
.nav.navbar-nav {
float:left;
width: 50%;
text-align:center;
}
.nav.navbar-nav a {
margin: 0 auto;
}
}
http://www.codeply.com/go/t83k8AkHkL
另一种方法是使用 Bootstrap 4 ,它使用 flexbox 和alignment of Navbar components easier than 3.x。
<nav class="navbar navbar-toggleable navbar-light bg-faded">
<ul class="navbar-nav mx-auto flex-shrink">
<li class="nav-item active">
<a class="nav-link" href="#"><img src="//placehold.it/130x80" alt="one" height="80"></a>
</li>
</ul>
<ul class="navbar-nav mx-auto flex-unordered flex-sm-last">
<li class="nav-item ">
<a class="nav-link" href="#"><img src="//placehold.it/130x80" alt="two" height="80"></a>
</li>
</ul>
<form class="mx-2 my-auto d-flex w-100 flex-last flex-sm-unordered">
<div class="input-group">
<input type="text" class="form-control" placeholder="Search">
<span class="input-group-btn">
<button class="btn btn-outline-secondary" type="button">GO</button>
</span>
</div>
</form>
</nav>