[英]React: How can I change the color of my navbar?
我试图弄清楚如何在引导程序中自定义我的标题颜色,但我不确定如何这样做。 通常我在 react 中使用 css 模块来自定义我的元素 [所以我会import classes from './header.module.css'
导入类似import classes from './header.module.css'
东西] 但我想尝试使用引导程序。 我将如何更改元素的颜色,如下所示:
import React from 'react';
import { Link } from 'react-router-dom';
import { auth } from '../services/firebase';
import "./header.css"; //*****THIS IS WHERE I IMPORT header
function Header() {
return (
<header>
<nav className="navbar navbar-expand-md navbar-light bg-light">
<Link className="navbar-brand" to="/">PitaPal</Link>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse justify-content-end" id="navbarNavAltMarkup">
{auth().currentUser
? <div className="navbar-nav">
<Link className="nav-item nav-link" to="/home">Home</Link>
<button className="btn btn-primary" onClick={() => auth().signOut()}>Logout</button>
</div>
: <div className="navbar-nav">
<Link className="nav-item nav-link" to="/login">Sign In</Link>
<Link className="nav-item nav-link" to="/signup">Sign Up</Link>
</div>}
</div>
</nav>
</header>
);
}
export default Header;
我的理解是,我应该通过以下方式传递自定义颜色:
.navbar-custom {
background-color: #ff5500;
}
<nav class="navbar navbar-expand-sm navbar-custom">
我的尝试:
头文件.js
上面的 react Header.js 脚本。 我知道我应该引用 css 文件,但不确定如何引用。
头文件
.navbar-custom {
background-color: #ff5500;
}
我认为应该这样做。
import React from 'react';
import { Link } from 'react-router-dom';
import { auth } from '../services/firebase';
import './style.css';
function Header() {
return (
<header>
<nav className="navbar navbar-expand-md navbar-custom">
<Link className="navbar-brand" to="/">PitaPal</Link>
<button className="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavAltMarkup" aria-controls="navbarNavAltMarkup" aria-expanded="false" aria-label="Toggle navigation">
<span className="navbar-toggler-icon"></span>
</button>
<div className="collapse navbar-collapse justify-content-end" id="navbarNavAltMarkup">
{auth().currentUser
? <div className="navbar-nav">
<Link className="nav-item nav-link" to="/home">Home</Link>
<button className="btn btn-primary" onClick={() => auth().signOut()}>Logout</button>
</div>
: <div className="navbar-nav">
<Link className="nav-item nav-link" to="/login">Sign In</Link>
<Link className="nav-item nav-link" to="/signup">Sign Up</Link>
</div>}
</div>
</nav>
</header>
);
}
你的样式文件./style.css
应该包含
.navbar-custom {
background-color: #ff5500;
}
另一种选择是创建一个新类并添加一个“重要”标签,如下所示:
.background-navbar {
background-color: #9ba4b4 !important;
}
Bootstrap 为您提供了一些预配置的类来设置背景样式,例如bg-dark
或bg-primary
:
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous"> <nav class="navbar bg-dark"> <h1> Navbar </h1> </nav> <nav class="navbar bg-primary"> <h1> Navbar </h1> </nav>
但您也可以创建自定义背景颜色类:
.bg-custom-red { background-color: #ff5500; }
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous"> <nav class="navbar bg-custom-red"> <h1> Navbar </h1> </nav>
或者只是覆盖 Bootstrap 中的默认值:
nav.bg-primary { background-color: #ff5500!important; }
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous"> <nav class="navbar bg-primary"> <h1> Navbar </h1> </nav>
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