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				|  |  | +<!DOCTYPE html>
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				|  |  | +<html lang="en">
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				|  |  | +<head>
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				|  |  | +    <meta charset="UTF-8">
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				|  |  | +    <meta name="viewport" content="width=device-width, initial-scale=1.0">
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				|  |  | +    <title>Document</title>
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				|  |  | +    <style>
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				|  |  | +        #box {
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				|  |  | +            width: 800px;
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				|  |  | +            height: 800px;
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				|  |  | +            margin: 0 auto;
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				|  |  | +            border: 3px solid #000;
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				|  |  | +        }
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				|  |  | +        #part1 {
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				|  |  | +            width: 200px;
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				|  |  | +            height: 200px;
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				|  |  | +            /* display: inline-block; */
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				|  |  | +            float: left;
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				|  |  | +            background-color: #f00;
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				|  |  | +        }
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				|  |  | +        #part2 {
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				|  |  | +            width: 230px;
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				|  |  | +            height: 230px;
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				|  |  | +            /* margin-top: 10px; */
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				|  |  | +            /* display: inline-block; */
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				|  |  | +            float: left;
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				|  |  | +            background-color: #ff0;
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				|  |  | +        }
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				|  |  | +        #part3 {
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				|  |  | +            width: 200px;
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				|  |  | +            height: 200px;
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				|  |  | +            /* float: left; */
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				|  |  | +            background-color: #00f;
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				|  |  | +        }
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				|  |  | +        /* 
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				|  |  | +        当想让元素在一行展示时
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				|  |  | +            使用浮动
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				|  |  | +                float:left/right/none
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				|  |  | +                使元素脱离文档流 不占位
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				|  |  | +
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				|  |  | +            排版:
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				|  |  | +                文档排版
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				|  |  | +                浮动
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				|  |  | +        */
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				|  |  | +    </style>
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				|  |  | +</head>
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				|  |  | +<body>
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				|  |  | +    <div id="box">
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				|  |  | +        <div id="part1"></div>
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				|  |  | +        <div id="part2"></div>
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				|  |  | +        <div id="part3"></div>
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				|  |  | +    </div>
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				|  |  | +</body>
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				|  |  | +</html>
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