1.表格斑马线

<style>
    table {
        width: 500px;
	    border-collapse: collapse;
    }
    tr#title {
        background-color: white;
        text-align: center;
        border-bottom: 5px solid gold;
        }
    tr#id1 {
    	text-align: center;
        border-bottom: 2px solid blueviolet;
    }
    
    tr#id2 {
    	text-align: center;
        border-bottom: 2px solid blueviolet;
    }
    
    tr#id3 {
    	text-align: center;
        border-bottom: 2px solid blueviolet;
    }
    
    tr#id4 {
    	text-align: center;
        border-bottom: 2px solid blueviolet;
    }
    
    
tr:nth-child(2n-1) {
	background-color: yellow;
}
</style>
<table>
    <thead>
        <tr id = "title">
            <td>id</td>
            <td>名称</td>
            <td>血量</td>
            <td>伤害</td>
        </tr>
    </thead>
    
    <tbody>
      <tr id = "id1">
        <td>1</td>
        <td>aaa</td>
        <td>34544</td>
        <td>34234</td>
      </tr>
      <tr id = "id2">
        <td>2</td>
        <td>addd</td>
        <td>1234</td>
        <td>32424</td>
      </tr>
      <tr id = "id3">
        <td>3</td>
        <td>gfxdgg</td>
        <td>3243</td>
        <td>124223</td>
      </tr>
      <tr id = "id4">
        <td>4</td>
        <td>fddzss</td>
        <td>43242</td>
        <td>340012</td>
      </tr>
    </tbody>
    
  
</table>
参考
 如何使用 CSS 设置 HTML 表格样式
2.美人尖

<style>
     div.alldirection{
        
     /* 当盒子宽高都是0,设置边框的时候,盒子由边框组成 */
        width:0px;
        height:0px;
   
        
    /* 四个角都设为透明*/
        border: 50px solid transparent;
    /*上部设置为红色*/
    border-top-color:red;
    }
   </style>
     
   <div class="alldirection">
   </div>
参考
 CSS利用边框实现三角形详解(上)
3.练习-断线下划线

<style>
    table {
        width: 100px;
	    border-collapse: separate;
        text-align: center;
        border-bottom: 5px solid gold;
    }
    .table-container {
        display: inline-block;
    }
</style>
<div class="table-container">
    <table>
      <tr>
        <td>商品</td>
      </tr>
    </table>
  </div>
  
  <div class="table-container">
    <table>
      <tr>
        <td>数量</td>
      </tr>
    </table>
  </div>
  
  <div class="table-container">
    <table>
      <tr>
        <td>价格</td>
      </tr>
    </table>
  </div>
  
  <div class="table-container">
    <table>
      <tr>
        <td>小记</td>
      </tr>
    </table>
  </div>
  
参考
 CSS 在同一行上显示多个表格
4.练习-下拉菜单风格

<style>
    a{
    font-size:14px;
    color: CornflowerBlue;
    text-decoration: none;
    }
    div.menu {
     width:80px;
     border: 1px solid lightgray;
    }
    div.menu a{
    display:block;
    color: #888;
    text-decoration: none;
    }
    
    div.menu a:hover
     {
         background-color: #f1f1f1;
    }
    
    </style>
    
    <a href="#nowhere"> 武器 </a> 
    <a href="#nowhere"> 护甲 </a> 
    <a href="#nowhere"> 英雄 </a> 
    
    <div class="menu">
    <a href="#nowhere"> 盖伦 </a> 
    <a href="#nowhere"> 提莫 </a> 
    <a href="#nowhere"> 安妮 </a> 
    <a href="#nowhere"> 死哥 </a> 
    </div>
    
    <div style="height:200px"></div>
    
5.练习-相对定位,但是又不占用位置

<!--属性 position 值 relative-->
<!--相对定位不会把元素从文档里删掉。而是在原文档位置的基础上,移动一定举例-->
<style>
.box1{
    position: relative;
}
.box2{
    position: relative;
}
.box3{
    left: 100px;
    position: absolute;
}
.box4{
    position: relative;
}
.box5{
    position: relative;
}
</style>
<div class = "box1">正常文字1</div>
<div class=  "box2" >正常文字2</div>
<div class=  "box3" >正常文字3</div>
<div class=  "box4" >正常文字4</div>
<div class=  "box5" >正常文字5</div>
参考
 CSS绝对定位(absolute)、相对定位(relative)方法(详解)



















