可以将CSS直接写进DIV里
<div id="box3" style=" background:#eeef;width: 250px;height:250px;float:left;">
<style></style>
</div>
一个div靠在另一个div左边
<div id="box3" style=" float:left;"> </div>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>tulater_webBroker全功能展示</title>
</head>
<body bgcolor="#ababab" >
<div id="all" >
<!-----------------------------静态 表格------------------------------>
<div id="box1" style="background: #eee;width:1100px;height:100px;">
<style>
table {
width: 400px;
margin: 0 auto;
border: 1px solid #000000;
border-collapse: collapse; }
th, td {
border: 1px solid #000000;
text-align: center; }
</style>
<table border="1">
<tr> <th>第一列</th> <th>二列表头</th>
</tr>
<tr> <td><a target="_blank" href="http://www.cnblogs.com/tulater">涂磊的小作</a></td> <td>row 1, cell 2</td>
</tr>
<tr> <td>row 2, cell 1</td> <td>row 2, cell 2</td>
</tr>
<tr> <td>row 3, cell 1</td> <td><a target="_blank" href="https://www.cnblogs.com/tulater/p/18519255">实体书</a></td>
</tr>
</table>
</div>
<!----------------------------------------------------->
<!----------------------------文件 上传------------------------------>
<div id="box2" style=" background:#eee1;width: 250px;height:250px;float:left;">
<font color="#ff0000">文件 上传</font><br>
<form action="upload" method="post" enctype="multipart/form-data">
<input type="file" size="60" name="myfile">
<input type="text" size="10" >
<input type="submit" value="上传">
</form>
</div>
<!---------------------------------中间 间隔------------------>
<div id="temp1" style=" background:white;width: 20px;height:250px;float:left;">
</div>
<!----------------------------成语 查询------------------------------>
<div id="box3" style=" background:#eeef;width: 250px;height:250px;float:left;">
<font color="#ff0000">成语 查询</font><br>
<form action="upload" method="post">
<input type="text" size="30" name="html" >
<input type="submit" value="查询">
</form>
</div>
<!----------------------------------------------------->
<!----------------------------文件 上传------------------------------>
<div id="box2" style=" background:#eee1;width: 250px;height:250px;">
文件 上传<br>
<form action="upload" method="post" enctype="multipart/form-data">
<input type="file" size="60" name="myfile">
<input type="text" size="10" >
<input type="submit" value="上传">
</form>
</div>
<!----------------------------------------------------->
</div>
</body>
</html>
标签：cell,nbsp,div,border,CSS,row From： https://www.cnblogs.com/tulater/p/18637476