如何在引导程序中更改导航颜色

Question

如何在Bootstrap 4中修改CSS以更改导航栏的颜色？

我该如何解决这个问题？这是我的代码，你可以检查一下

<nav class="navbar navbar-expand-lg navbar-dark bg-transparent">
<div class="container">
<a class="navbar-brand" href="#"><img src="img/logo.png"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02"
aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTogglerDemo02">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#" style="color: #1fd0b6;">Fiverr Pro</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link"><span><img
src="https://fiverr-dev-res.cloudinary.com/general_assets/flags/1f1fa-1f1f8.png" style="width: 20px; height: 20px;"></span><span class="p-2">English</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Become a Seller</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Sign In</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">
Join
</a>
</li>
</ul>
</div>
</div>
</nav>

你可以检查一下这是我的css

* {
margin: 0;
padding: 0;
}
.nav-link {
font-size: 16px;
font-weight: 600;
}

.nav-item {
margin: 2px;
}

有可能用引导类改变颜色吗

Answer 1

我猜它已经有了一个颜色集，因为它的类是"nawbar dark"，所以你可以直接更改颜色，但通常情况下，如果已经设置了类，你必须更改nawbar类才能更改颜色，但是你可以用！重要(但不推荐(

.navbar {
background-color: orange !important;
}

Answer 2

如果我理解你的要求，你想让navbar有颜色吗？

* {
margin: 0;
padding: 0;
}
.nav-link {
font-size: 16px;
font-weight: 600;
}
.nav-item {
padding: 5px;
background-color: gray;
display: inline-block;
border: 1px solid black;
}

<nav class="navbar navbar-expand-lg navbar-dark bg-transparent">
<div class="container">
<a class="navbar-brand" href="#"><img src="img/logo.png"></a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarTogglerDemo02" aria-controls="navbarTogglerDemo02" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarTogglerDemo02">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="#" style="color: #1fd0b6;">Fiverr Pro</a>
</li>
<li class="nav-item">
<a href="#" class="nav-link"><span><img
src="https://fiverr-dev-res.cloudinary.com/general_assets/flags/1f1fa-1f1f8.png" style="width: 20px; height: 20px;"></span><span class="p-2">English</span></a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Become a Seller</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Sign In</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">
Join
</a>
</li>
</ul>
</div>
</div>
</nav>

Answer 3

首先，您可能想看看这里：https://getbootstrap.com/docs/4.4/components/navbar/#color-方案

在这里，您可以使用导航条亮类而不是导航条暗类。同样，您可以使用bgprimary、bgsuccess、bg-info、bgwarning、bgdanger、bgsecondary、bgdark和bg-ligh中的一个类作为背景色，而不是bg-transparent类。如果您想使用其他颜色，可以在链接到页面的样式文件中定义自己的类，并使用上面的bootstarp类。例如：

.my-bg-color{
background-color: #123456;
}
.my-navbar-theme .navbar-brand {
  color: # ff0;
}
.my-navbar-theme .navbar-brand: hover, .my-navbar-theme .navbar-brand: focus {
  color: # ff0;
}
.my-navbar-theme .navbar-nav .nav-link {
  color: rgba (255, 255, 0, 0.5);
}
.my-navbar-theme .navbar-nav .nav-link: hover, .my-navbar-theme .navbar-nav .nav-link: focus {
  color: rgba (255, 255, 0, 0.75);
}
.my-navbar-theme .navbar-nav .nav-link.disabled {
  color: rgba (255, 255, 0, 0.25);
}
.my-navbar-theme .navbar-nav .show> .nav-link,
.my-navbar-theme .navbar-nav .active> .nav-link,
.my-navbar-theme .navbar-nav .nav-link.show,
.my-navbar-theme .navbar-nav .nav-link.active {
  color: # ff0;
}
.my-navbar-theme .navbar-toggler {
  color: rgba (255, 255, 0, 0.5);
  border-color: rgba (255, 255, 0, 0.1);
}
.my-navbar-theme .navbar-toggler-icon {
  background-image: url ("data: image / svg + xml,% 3csvg xmlns = 'http: //www.w3.org/2000/svg' width = '30 'height = '30' viewBox = '0 0 30 30 '% 3e% 3cpath stroke =' rgba (255, 255, 0, 0.5) 'stroke-linecap =' round 'stroke-miterlimit = '10' stroke-width = '2' d = 'M4 7h22M4 15h22M4 23h22' / 3c% 3% / 3% SVG ");
}
.my-navbar-theme .navbar-text {
  color: rgba (255, 255, 0, 0.5);
}
.my-navbar-theme .navbar-text a {
  color: # ff0;
}
.my-navbar-theme .navbar-text a: hover, .my-navbar-theme .navbar-text a: focus {
  color: # ff0;
}

然后，您可以添加自己的类，而不是引导程序类。

<nav class="navbar navbar-expand-lg my-navbar-theme my-bg-color">