Here is the error now showing in browser console, anyone please explain what is this? 这是html文件的截图
我正在使用 Bootstrap 构建网页，我已将 Bootstrap CSS 和我的 CSS 添加到“head”标签中。这是代码-
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!--Bootstrap css-->
<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">
<title>
first web page using bootstrap
</title>
<!-- Font awesome for brand name-->
<link href="https://fonts.googleapis.com/css?family=Permanent+Marker&display=swap" rel="stylesheet">
<!--Our CSS-->
<link rel="stylesheet" href="CSS\style.css" >
</head>
这是我添加到我的 CSS 中的内容-
.mybanner{
background-color: rgb(12, 8, 5);
text-align: center;
}
.mybg{
background-color: rgb(161, 86, 86);
}
.other{
width: 30px;
height: 30px;
}
这是完整的代码-
<!DOCTYPE html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!--Bootstrap css-->
<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">
<title>
first web page using bootstrap
</title>
<!-- Font awesome for brand name-->
<link href="https://fonts.googleapis.com/css?family=Permanent+Marker&display=swap" rel="stylesheet">
<!--Our CSS-->
<link rel="stylesheet" href="CSS\style.css" >
</head>
<body>
<!-- Nav bar-->
<nav class="navbar navbar-light navbar-expand-lg mybg" style="background-color: #3be79f;">
<a class="navbar-brand" href="#" style="color: rgb(141, 7, 7); font-size: 25px; font-family: 'Permanent Marker', cursive;"> Stiffy </a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav mr-auto">
<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="#">Products</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Categories
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="#">Beauty</a>
<a class="dropdown-item" href="#">Health</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="#">Lifestyle</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link disabled" href="#" tabindex="-1" aria-disabled="true">Your Cart</a>
</li>
<li class="nav-item">
<a class="nav-link" href="#">Sign In</a>
</li>
</ul>
<form class="form-inline my-2 my-lg-0">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</div>
</nav>
<!--slideshow starts-->
<div class="fluid-container">
<div id="myCarousel" class="carousel slide" data-ride="carousel">
<!-- Indicators -->
<ol class="carousel-indicators">
<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
<li data-target="#myCarousel" data-slide-to="1"></li>
<li data-target="#myCarousel" data-slide-to="2"></li>
</ol>
<!-- Wrapper for slides -->
<div class="carousel-inner">
<div class="carousel-item active">
<img src="../Image\unsplash.jpg" alt="Los Angeles" style="width:100%;">
<div class="carousel-caption">
<h3>Photography</h3>
<p>It is always so much fun!</p>
</div>
</div>
<div class="carousel-item">
<img src="../Image\zombie-945622.jpg" alt="Chicago" style="width:100%;">
<div class="carousel-caption">
<h3>Ghost</h3>
<p>Thank you, Mr. Demon</p>
</div>
</div>
<div class="carousel-item">
<img class="img-1" src="../Image\zombie-979358.jpg" alt="New York" style="width:100%; height: 60%;">
<div class="carousel-caption">
<h3> Oops.</h3>
<p>Ghosts are best.</p>
</div>
</div>
</div>
<!-- Left and right controls -->
<a class="carousel-control-prev" href="#myCarousel" data-slide="prev">
<span class="carousel-control-prev-icon"></span>
</a>
<a class="carousel-control-next" href="#myCarousel" data-slide="next">
<span class="carousel-control-next-icon"></span>
</a>
</div>
</div>
<!--slideshow ends-->
<!-- Banner starts-->
<div class="fluid-container">
<div class="row" class="mybanner" style= "background-color: #3be79f;
text-align: center;"
>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12" >
24*7 Services
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12" >
Cheaper in price
</div>
<div class="col-lg-4 col-md-4 col-sm-4 col-xs-12" >
Deliver ASAP
</div>
</div>
</div>
<!-- Banner ends-->
<!-- other stuff-->
<div class="other">
<img src="../Image\bride.jpg">
</div>
<!-- JQuery,JS, BOOTSTRAP JS-->
<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>
我已经正确添加了类，不知道为什么它不起作用。请帮助我。谢谢。
最佳答案
你在html文件夹下，你应该用..走出这个文件夹，然后告诉到哪个文件夹下/CSS/，然后选择文件style.css 使用这个:
<link rel="stylesheet" href="../CSS/style.css" />
关于css - 我无法将外部 css 链接到 HTML，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59091337/