css - 如何覆盖背景图像上的导航栏?
问题描述
我尝试在背景图像上放置一个基本的引导导航栏,但它只显示角落中导航栏的一部分。我想将整个导航栏放在顶部。我知道我应该覆盖某些东西,但是什么?
我尝试使用!important
,但它只改变部分的颜色,而不是整个导航栏。
`
<!DOCTYPE html>
<html>
<head>
<title>Who am I?</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<link rel="stylesheet" type="text/css" href="page_style.css">
</head>
<body>
<header>
<nav class="navbar navbar-dark bg-dark bg-custom">
<a class="navbar-brand" href="#">
<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d9/Icon-round-Question_mark.svg/600px-Icon-round-Question_mark.svg.png" width="30" height="30" class="d-inline-block align-top" alt="question mark">
Who am I?
</a>
</nav>
<nav class="navbar navbar-expand-lg navbar-light bg-light">
<a class="navbar-brand" href="#">Navbar</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarNavDropdown">
<ul class="navbar-nav">
<li class="nav-item active">
<a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Features</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Pricing</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdownMenuLink" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown link
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdownMenuLink">
<a class="dropdown-item" href="#">Action</a>
<a class="dropdown-item" href="#">Another action</a>
<a class="dropdown-item" href="#">Something else here</a>
</div>
</li>
</ul>
</div>
</nav>
</header>
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</body>
</html>
`
CSS:
`
body{
background-image: url(https://besthqwallpapers.com/Uploads/5-12-2018/73473/wooden-background-brown-tree-brown-background-wooden-pattern-vertical-lines.jpg);
background-size: cover;
display: flex;
flex-wrap: wrap;
}
.navbar{
background-image: linear-gradient(to right, #916E34, #915D34, #914C34) !important;
}
`
那么我应该怎么做才能解决这个问题呢?
解决方案
body{
background-image: url(https://besthqwallpapers.com/Uploads/5-12-2018/73473/wooden-background-brown-tree-brown-background-wooden-pattern-vertical-lines.jpg);
background-size: cover;
display: flex;
flex-wrap: wrap;
}
.navbar{
background-image: linear-gradient(to right, #916E34, #915D34, #914C34) !important;
width:100vw;
}
那应该工作
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