Table
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
table{
border-collapse: collapse;
}
td, th {
text-align: center;
border: 1px solid #333;
padding: 8px 16px;
}
</style>
</head>
<body>
<table>
<caption>xixihaa</caption>
<thead>
<tr>
<th>排名</th>
<th>名字</th>
<th>代码</th>
<th>价格</th>
<th>涨跌</th>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>xixihaha</td>
<td>oooo</td>
<td>24</td>
<td>10%</td>
</tr>
<tr>
<td>1</td>
<td>xixihaha</td>
<td>oooo</td>
<td>24</td>
<td>10%</td>
</tr>
<tr>
<td>1</td>
<td>xixihaha</td>
<td>oooo</td>
<td>24</td>
<td>10%</td>
</tr>
</tbody>
</table>
</body>
</html>
|
- type:text, password,
- 经典按钮:button, submit,reset
点击input框前的文字即可激活跳转到框中
select和option
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| <select name="alugg">
<option value="apple">爱吃苹果</option>
</select>
|
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| <form action="/abc" method="post">
<div>
<label for="username" >
User:<input id="username" type="text" name="username">
</label>
<label for="password">
password:<input id="password" type="password" name="password">
</label>
</div>
<div>
<label for="male">
<input id="male" type="radio" name="sex" value="male">male
</label>
<label for="female">
<input id="female" type="radio" name="sex" value="female">female
</label>
</div>
<button type="submit">Submit</button>
</form>
|
结构伪类
nth-child
nth-child(1):是父元素的第1个子元素
nth-child(2n):是父元素的第2,4,6个子元素
nth-chid(-n+5):前5个
nth-last-child:从后往前数
nth-of-type
同样也有nth-last-of-type
第几个符合类型的元素.
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.box > div:nth-child(4){
color: red;
}
.box > div:nth-of-type(4){
color: blue;
}
</style>
</head>
<body>
<div class="box">
<p>xixixha</p>
<div>list1</div>
<h1>ooo</h1>
<div>list2</div>
<div>list3</div>
<h1></h1>
<div>list4</div>
<div>list5</div>
<div>list</div>
<div>list</div>
</div>
</body>
</html>
|
其他伪类
first-child
first-of-type
only-child
only-of-type
empty
否定结构伪类
:not(xxx):不是xx的才被选中
CSS sprite
一种图像合成技术,把各种小图片合并到一张图片上,然后利用CSS的背景定位来显示对应的图片部分.
好处:
- 减少网页http请求数量,加快网页相应速度,减少服务器压力
- 减少图片总大小
- 解决了图片命名的困扰
获得了精灵图后,去sprite cow上定位具体的各个图片
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.topbar{
background-image: url(../../image_files/cc1d8d291ea917c0.png);
background-repeat: no-repeat;
display: inline-block;
}
i.hot-icon{
background-position:-205px 0 ;
width: 103px;
height: 32px;
}
</style>
</head>
<body>
<i class="topbar hot-icon"></i>
</body>
</html>
|