如何使用CSS在导航栏品牌上添加箭头(参见图像示例)
箭头在移动视图中不应可见。
以下代码不起作用 - 显然我不是最擅长CSS的人。
以下代码不起作用 - 显然我不是最擅长CSS的人。
.navbar-default {
.navbar-brand {
position: relative;
float: left;
margin-right:30px;
color: @navbar-default-brand-color;
&:hover,
&:focus {
color: @navbar-default-brand-hover-color;
background-color: @navbar-default-brand-hover-bg;
}
&:after {
content: " ";
display: block;
width: 0;
height: 0;
border-top: 19px solid transparent;
border-bottom: 19px solid transparent;
border-left: 12px solid @brand-secondary;
position: absolute;
top: 50%;
margin-top: -19px;
left: 100%;
z-index: 3;
}
&:before {
content: " ";
display: block;
width: 0;
height: 0;
border-top: 19px solid transparent;
border-bottom: 19px solid transparent;
border-left: 12px solid white;
position: absolute;
top: 50%;
margin-top: -19px;
margin-left: 1px;
left: 100%;
z-index: 3;
}
@media (max-width: @grid-float-breakpoint) {
}
}
}
HTML如下所示
<nav class="navbar navbar-default">
<div class="container-fluid">
<div class="navbar-header">
<button class="navbar-toggle collapsed" aria-controls="navbar" aria-expanded="false" data-target="#navbar" data-toggle="collapse" type="button">
<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="#">Bootstrap</a>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active">
<a href="#">Getting started</a>
</li>
<li>
<a href="#">CSS</a>
</li>
<li>
<a href="#">Components</a>
</li>
<li>
<a href="#">Javascript</a>
</li>
<li>
<a href="#">Customize</a>
</li>
</div>
</div>
</nav>
更新:我已经使用before和after css使其正常工作。如何使用媒体查询覆盖此css,即在移动设备上删除它的css是什么?