Flex综合案例2 - 博客详情

使用flex布局实现登录界面效果：
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        body {
            margin: 0px;
            padding: 0px;
        }

        #header, #logo, #main {
            width: 100%;
            margin: 0px auto;
        }

        #header {
            display: flex;
            justify-content: space-around;
            background-color: #ccc;
            height: 40px;
        }

        .header_left, .header_right {
            width: 50%;
            color: #444;
            font-size: small;
            line-height: 40px;
        }

        .header_left {
            text-align: left;
            padding-left: 100px;
        }

        .header_right {
            text-align: right;
            padding-right: 100px;
        }

        #logo {
            line-height: 90px;
            font-size: 24pt;
            font-weight: bold;
            color: #ccc;
            padding-left: 0px;
        }

        #logo img {
            position: relative;
            top: 20px;
            bottom: 0;
            left: 0;
            right: 0;
            margin-left: 120px;
        }

        #main {
            width: 100%;
            height: 410px;
            background: rgb(34, 119, 223);
            display: flex;
            justify-content: space-around;
            padding: 40px 0px;
        }

        .main_left {
            width: 40%;
        }

        .main_right {
            width: 30%;
        }


        .main_left img {
            width: 420px;
            margin-left: 80px;
        }

        .main_right {
            position: relative;
            margin: 0px auto;
            background: #FFFAFA;
            border: 1px solid #EEEEEE;
            border-radius: 5px;
        }

        .main_right #loginform {
            margin: 10px 20px;
            width: 90%;
            height: 40px;
            font-size: 15pt;
        }

        .main_right #loginform input {
            margin: 10px 20px;
            width: 90%;
            height: 40px;
            font-size: 15pt;
        }

        .main_right #login_title {
            width: 50%;
            color: #a6a6a6;
            font-size: xx-large;
            line-height: 40px;
            padding: 20px 50px;
        }

        #footer {
            text-align: center;
            color: #a6a6a6;
        }

    </style>
</head>
<body>
<div id="header">
    <div class="header_left">甘肃政法大学-计算机学院</div>
    <div class="header_right">计算机学院软件工程教研室|0391-54356774</div>
</div>
<div id="logo">
    <img src="https://img.simoniu.com/logo.jpg"/>&nbsp;&nbsp;用户登录
</div>
<div id="main">
    <div class="main_left">
        <img id="backlogo" src="https://img.simoniu.com/login_bg.png"/>
    </div>
    <div class="main_right">
        <div id="login_title">登录</div>
        <div id="loginform">
            <input style="display: block" type="text" placeholder="请输入用户名"/>
            <input style="display: block" type="password" placeholder="请输入密码"/>
            <div style="margin: 10px 20px;"><img style="width: 120px" src="https://img.simoniu.com/validatecode.png"/>
            </div>
            <input style="display: block" type="text" placeholder="请输入验证码"/>
            <input type="button" value="登录"/>
        </div>
    </div>
</div>
<br>

<p id="footer">
    Copyright © 2017-2021 www.simoniu.com All Rights Reserved. 陕ICP备17021699号-1 [后台管理]
</p>

</body>
</html>
运行效果：