CSS基础-14-水平导航栏(示例及详细创建过程)

2022-06-25  本文已影响0人  玄德公笔记

1. 内联列表实现

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>hello world</title> 
<style>
ul
{
    /* 不显示列表前的标记 */
    list-style-type:none;
    margin:0;
    padding:0;
}
li
{
  /* 将块元素转变为内联元素 */
  display:inline;
}
</style>
</head>

<body>
<ul>
<li><a href="#home">主页</a></li>
<li><a href="#news">新闻</a></li>
<li><a href="#contact">联系</a></li>
<li><a href="#about">关于</a></li>
</ul>

</body>
</html>

2. 浮动列表实现

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"> 
<title>hello world </title> 
<style>
ul
{
    list-style-type:none;
    margin:0;
    padding:0;
    overflow:hidden;
}
li
{
    float:left;
}
a
{
    display:block;
    padding: 14px 16px;
    text-decoration: none;

}
</style>
</head>

<body>
<ul>
<li><a href="#home">主页</a></li>
<li><a href="#news">新闻</a></li>
<li><a href="#contact">联系</a></li>
<li><a href="#about">关于</a></li>
</ul>

</body>
</html>

3. 添加边框

3.1 思路

ul {
    ……
    background-color: #333;
}
.active {
    background-color: #4CAF50;
}
li a:hover:not(.active) {
    background-color: #aaaaaa;
}

3.2 实际效果

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>hello world</title>
<style>
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover:not(.active) {
    background-color: #aaaaaa;
}

.active {
    background-color: #4CAF50;
}
</style>
</head>
<body>

<ul>
  <li><a class="active" href="#home">主页</a></li>
  <li><a href="#news">新闻</a></li>
  <li><a href="#contact">联系</a></li>
  <li><a href="#about">关于</a></li>
</ul>

</body>
</html>

4. 添加分割线

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>hello world</title>
<style>
ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
    /* 右侧添加一个边框 */
    border-right:1px solid #bbb;
}
/* 最后一个li不添加右边框 */
li:last-child {
    border-right: none;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover:not(.active) {
    background-color: #dddddd;
}

.active {
    background-color: #4CAF50;
}
</style>
</head>
<body>

<ul>
  <li><a class="active" href="#home">主页</a></li>
  <li><a href="#news">新闻</a></li>
  <li><a href="#contact">联系</a></li>
  <li><a href="#about">关于</a></li>
</ul>

</body>
</html>

5. 固定导航栏

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>hello world</title>
<style>
body {margin:0;}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
    /* 固定导航栏 */
    position: fixed;
    top: 0;
    width: 100%;
}

li {
    float: left;
}

li a {
    display: block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover:not(.active) {
    background-color: #dddddd;
}

.active {
    background-color: #4CAF50;
}
</style>
</head>
<body>

<ul>
  <li><a class="active" href="#home">主页</a></li>
  <li><a href="#news">新闻</a></li>
  <li><a href="#contact">联系</a></li>
  <li><a href="#about">关于</a></li>
</ul>

<div style="padding:20px;margin-top:30px;background-color:#1abc9c;height:1500px;">

<h2>标题</h2>

<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
<p>Some text some text some text some text..</p>
</div>

</body>
</html>

image.png
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