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console 命令行工具 X clear

                    
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console
<body><div class="menu">
  <ul>
  <li style="background-color:green"><strong style="color:white">菜单<strong></strong></strong></li><li>
  </li><li><a href="file:///D:/httpdemo/demo1.html#addr1">文本框</a></li>
    <li><a href="file:///D:/httpdemo/demo1.html#addr2">容器</a></li>
    <li><a href="file:///D:/httpdemo/demo1.html#addr3">表格</a></li>
  </ul>
</div>
<div class="main">
  <br>
  <br>
  
<div class="class1">
  <h1 style="text-shadow:5px 5px 5px grey">Title<a name="addr1">&nbsp;</a></h1>
  <p>html is too hard to learn.<br>you will get it if you press F12 button</p>
</div>

<div style="width:500px">
  <div style="background-color:lavender">
  <h1 style="text-align:center;margin:0;color:darkblue"><a name="addr2">容器</a></h1>
</div><div style="background-color:lightgray;width:350px;height:200px;float:left">
  内容<br>blablablabla
</div><div style="background-color:lavenderblush;width:150px;height:200px;float:left">
  <strong>菜单</strong>
<ul style="margin-top:5px;padding-left:25px">
  <li>单击是没用的</li>
  <li>双击是没用的</li>
  <li>右键是没用的</li>
</ul>
  
</div><div style="background-color:lavender;clear:both">
<p style="text-align:end;margin-right:3px"><em>第一次CSS</em>
</p>
</div></div><div style="position:relative;left:60px;margin:40px">
<table style="border-collapse:collapse;letter-spacing:3px;text-align:center;border:2px solid darkblue;">
  <tbody>
  <tr>
    <th colspan="2"><a name="addr3">&nbsp;</a>
    </th><th>星期一</th>
    <th>星期二</th>
    <th>星期三</th>
    <th>星期四</th>
    <th>星期五</th>
  </tr>
  <tr class="classtd">
   <th rowspan="4" style="padding-left:7px;"><br></th>
    <th>第一节</th>
    <td>1</td>
    <td>2</td>
    <td>星期三</td>
    <td>星期四</td>
    <td>星期五</td>
  </tr>
  <tr>
    <th>第二节</th>
    <td>1</td>
    <td>2</td>
    <td>星期三</td>
    <td>星期四</td>
    <td>星期五</td>
  </tr>
  <tr class="classtd">
    <th>第三节</th>
    <td>1</td>
    <td>2</td>
    <td>星期三</td>
    <td>星期四</td>
    <td>星期五</td>
  </tr>
  <tr>
    <th>第四节</th>
    <td>1</td>
    <td>2</td>
    <td>星期三</td>
    <td>星期四</td>
    <td>星期五</td>
  </tr>
  <tr class="classtd">
    <th rowspan="2" style="padding-left:7px"><br></th>
    <th>第五节</th>
    <td>1</td>
    <td>2</td>
    <td>星期三</td>
    <td>星期四</td>
    <td>&nbsp;</td>
  </tr>
  <tr>
    <th>第六节</th>
    <td>1</td>
    <td>2</td>
    <td>星期三</td>
    <td>星期四</td>
    <td>&nbsp;</td>
  </tr>
</tbody></table>&nbsp;
</div>
  <div class="im"></div>
  <br>
</div><div class="rightpart">
<div class="circleclass">
  <div class="insider">
  </div>
</div></div></body>
 body
    {
        margin:0;
    }
    .rightpart
    {
        position:absolute;
        left:85%;
        top:0px;
        width:15%;
        height:986px;
    }
    .circleclass
    {
        position:relative;
        width:100px;
        height:100px;
        top:800px;
        animation:myfirst 10s;
        animation-iteration-count:infinite;
        
    }
    @keyframes myfirst
    {
        0%{top:0px}
        50%{top:800px}
        100%{top:0px}
    }
    .insider
    {
        width:100px;
        height:100px;
        border-radius:50px;
        animation:mysecond 3s;
        animation-iteration-count:infinite;
    }
    @keyframes mysecond
    {
        0%{background-color:red}
        33%{background-color:yellow}
        67%{background-color:blue}
        100%{background-color:red}
    }
    .class1
    {
        background-color:lightgreen;
        color:white;
        margin:50px;
        padding:20px;
	    width:200px;
	    height:200px;
        margin-top:0px;
        transition:width 2s,height 2s,background-color 2s,transform 2s,margin-bottom 2s;
    }
    .class1:hover
    {
        width:250px;
        height:250px;
        background-color:lightblue;
        transform:rotate(1080deg);
        margin-bottom:0px;
    }
    #id1
    {
        padding-left:5px;    
    }
    th
    {
        padding:5px;
        border:2px solid darkblue;
        background-color:DarkTurquoise;
        color:white;
    }
    td
    {
        background-color:paleturquoise;
        border:1px solid darkblue;
    }
    .classtd td
    {
        background-color:white;
    }
    .menu ul
    {
        list-style-type:none;
        margin:0;
        padding:0;
        width:120px;
        background-color:lightgrey;
        position:fixed;
        height:100%;
        overflow:auto;
    }
    .menu li a
    {
        display:block;
        background-color:lightgrey;
        text-decoration:none;
        color:black;
    }
    .menu li a:hover
    {
        background-color:darkgray;
        color:white;
    }
    .main
    {
        margin-left:130px;
    }
    .im
    {
       background-image:url(demo1_files/timg.jpg);
       width:73px;
       height:23px;
       background-position:-75px -306px;
       border-radius:5px;
       
    }
    .im:hover
    {
        background-position:-163px -306px;
    }
    @media screen and (max-width:600px)
    {
        .menu ul{display:none;}
        .main {margin-left:5px;}
    }