header[role="banner"] {
#logo-main {
display: block;
margin: 20px auto;
}
}
#navbar-primary.navbar-default {
background: transparent;
border: none;
.navbar-nav {
width: 100%;
text-align: center;
> li {
display: inline-block;
float: none;
> a {
padding-left: 30px;
padding-right: 30px;
}
}
}
}
.collapse .navbar-collapse{
text-align: center;
}<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<meta name="description" content="">
<meta name="author" content="">
<link rel="icon" href="../../favicon.ico">
<title>Blog Template for Bootstrap</title>
<!-- Bootstrap core CSS -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- Custom styles for this template -->
<link href="css/blog.css" rel="stylesheet">
</head>
<body>
<div class="container">
<header role="banner">
<img id="logo-main" src="https://s3-us-west-
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar-primary-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="collapse navbar-collapse" id="navbar-primary-collapse" >
<ul class="nav navbar-nav">
<li class="active"><a href="#">Link</a></li>
<li ><a href="#" >Link</a></li>
<li><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
<li><a href="#">Link</a></li>
</ul>
</div><!-- /.navbar-collapse -->
</div><!-- /.container-fluid -->
</nav>
</header><!-- header role="banner" -->
</div>
<div class="container">
<div class="blog-header">
<h1 class="blog-title">The Bootstrap Blog</h1>
<p class="lead blog-description">The official example template of creating a blog with Bootstrap.</p>
</div>
<div class="row">
<div class="col-sm-8 blog-main">
<div class="blog-post">
<h2 class="blog-post-title">Sample blog post</h2>
<p class="blog-post-meta">January 1, 2014 by <a href="#">Mark</a></p>
<p>This blog post shows a few different types of content that's supported and styled with Bootstrap. Basic typography, images, and code are all supported.</p>
<hr>
<p>Cum sociis natoque penatibus et magnis <a href="#">dis parturient montes</a>, nascetur ridiculus mus. Aenean eu leo quam. Pellentesque ornare sem lacinia quam venenatis vestibulum. Sed posuere consectetur est at lobortis. Cras mattis consectetur purus sit amet fermentum.</p>
<blockquote>
<p>Curabitur blandit tempus porttitor. <strong>Nullam quis risus eget urna mollis</strong> ornare vel eu leo. Nullam id dolor id nibh ultricies vehicula ut id elit.</p>
</blockquote>
<p>Etiam porta <em>sem malesuada magna</em> mollis euismod. Cras mattis consectetur purus sit amet fermentum. Aenean lacinia bibendum nulla sed consectetur.</p>
<h2>Heading</h2>
<p>Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor. Duis mollis, est non commodo luctus, nisi erat porttitor ligula, eget lacinia odio sem nec elit. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p>
<h3>Sub-heading</h3>
<p>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</p>
<pre><code>Example code block</code></pre>
<p>Aenean lacinia bibendum nulla sed consectetur. Etiam porta sem malesuada magna mollis euismod. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa.</p>
<h3>Sub-heading</h3>
<p>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Aenean lacinia bibendum nulla sed consectetur. Etiam porta sem malesuada magna mollis euismod. Fusce dapibus, tellus ac cursus commodo, tortor mauris condimentum nibh, ut fermentum massa justo sit amet risus.</p>
<ul>
<li>Praesent commodo cursus magna, vel scelerisque nisl consectetur et.</li>
<li>Donec id elit non mi porta gravida at eget metus.</li>
<li>Nulla vitae elit libero, a pharetra augue.</li>
</ul>
<p>Donec ullamcorper nulla non metus auctor fringilla. Nulla vitae elit libero, a pharetra augue.</p>
<ol>
<li>Vestibulum id ligula porta felis euismod semper.</li>
<li>Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus.</li>
<li>Maecenas sed diam eget risus varius blandit sit amet non magna.</li>
</ol>
<p>Cras mattis consectetur purus sit amet fermentum. Sed posuere consectetur est at lobortis.</p>
</div><!-- /.blog-post -->
</body>
</html>
我需要帮助集中导航链接和图像＆＃34;徽标事物＆＃34;在顶部。我尝试了几种不同的东西，但我找不到解决方案。我不确定我做错了什么我已经调试好几个小时试图解决它。如果有人能帮助我，我将非常感激：）
答案 0 :(得分：0)
在你的css改变的第23行附近：
header[role="banner"] {
#logo-main {
display: block;
margin: 20px auto;
}
}
为：
header[role="banner"] {
display: block;
margin: 20px auto;
text-align:center;
}
或者如果您仍然想要＃logo-main将css更改为：
#logo-main {
display: block;
margin: 20px auto;
text-align:center;
}
和第67行的html更改
<header role="banner">
为：
<header id="logo-main">