老师，请检查代码是否正确

来源：4-8 自由编程

qq_慕工程8315848

2020-10-17 22:15:26

# 具体遇到的问题

# 报错信息的截图

# 相关课程内容截图

# 尝试过的解决思路和结果

# 粘贴全部相关代码，切记添加代码注释（请勿截图）

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
        margin: 0;
        padding: 0;
        }
        ul,ol{
            list-style: none;
        }
        a{
            text-decoration: none;
        }

        main{
            width: 1200px;
            margin: 0 auto;
            position: relative;
        }
        main .main-top{
            margin-top: 30px;
        }
        main  h3{
            font-size: 32px;
            text-align: center;
        }
        main .main-top .line{
            width: 60px;
            height: 3px;
            background: #07cbc9;
            margin: 10px auto;

        }
        main .main-top p{
            text-align: center;
            color: gray;
            font-style: 14px;
        }
        main .content{
            width: 1201px;
            height: 464px;
        }
        main .content .left-concent{
            float: left;

        }
        main .content .left-concent h3{
            text-align: left;
            margin: 30px 0;
        }
        main .content .left-concent .box{
            width: 300px;
            padding: 20px;
            font-size: 18px;
            border: 1px solid gray;
            background: rgba(255, 255, 255, .5);
            position: absolute;
            z-index: 9;
        }
        main .content .left-concent .box p{
            margin-bottom: 30px;
        }

        main .content .left-concent .box .btn{
            width: 140px;
            height: 40px;
            background: #000;
            color: white;
            text-align: center;
            line-height: 40px;
        }
        main .content img{
            float: left;
            width: 650px;
            height: 435px;
            position: absolute;
            left: 50%;
            margin-left: -325px;
            bottom: 0;

        }
        main .content .right-content{
            float: right;

        }
        main .content .right-content ul li{
            width: 260px;
            padding: 40px 0;
            text-align: center;
            margin: 30px 0 0 20px;
            border: 1px solid #07cbc9;
        }
        main .content .right-content ul li h4{
            font-size: 28px;
        }
        main .content .right-content ul li .line{
            width: 60px;
            height: 3px;
            background: #07cbc9;
            margin: 10px auto;
        }
    </style>
</head>
<body>
    <main>
        <div class="main-top">
            <h3>ABOUT</h3>
            <div class="line"></div>
            <p>Lorem Ipsum is simply dummy text of the printing and typesetting
                <br>industry. Lorem Ipsum has been the industry's standard dummy
                <br>text ever since the 1500s.</p>
        </div>
        <div class="content">
            <div class="left-concent">
                <h3>A WORD
                    <br>ABOUT US</h3>
                <div class="box">
                    <p>
                        Praesent dignissim viverra est, sed bibendum ligula congue non. Sed ac nisl et felis gravida commodo? Suspendisse eget ullamcorper ipsum. Suspendisse diam amet.
                    </p>
                    <div class="btn">EXPLORE</div>
                </div>
            </div>
            <img src="images/bb3.jpg" alt="">
            <div class="right-content">
                <ul>
                    <li class="right-content-top">
                        <h4>70000</h3>
                        <div class="line"></div>
                        <p>Student</p>
                    </li>
                    <li class="right-content-bottom">
                        <h4>600</h3>
                        <div class="line"></div>
                        <p>Facyltyu</p>
                    </li>
                 </ul>
            </div>
        </div>
    </main>
</body>
</html>