可以有人帮我一下吗，辛苦啦，帮我写几道题

img

可以有人帮我一下吗，辛苦啦，帮我写几道题，非常感谢，请喝奶茶

三.

img

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style>
            .box {
                overflow: hidden;
                margin: 0 auto;
                display: flex;
                align-items: center;
                justify-content: center;
            }
            
            .box .item {
                width: 100px;
                height: 100px;
            }
            
            .box .item.green {
                background-color: green;
            }
            
            .box .item.red {
                background-color: red;
            }
            
            .box .item.yellow{
                background-color: yellow;
            }
        </style>
    </head>
    <body>
        <div class='box'>
            <div class='item green'></div>
            <div class='item red'></div>
            <div class='item yellow'></div>
        </div>
    </body>
</html>

四.

img

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style>
            
        </style>
    </head>
    <body>
        <h1>网页标题</h1>
        <ul>
            <li><a href="#">首页</a></li>
            <li><a href="#">帮助</a></li>
        </ul>
        <h2>文章主标题</h2>
        <h2>文章子标题</h2>
        <h4>文章正文</h4>
        <h3>评论标题</h3>
        <h4>文章正文</h4>
        <h5>版权所有：陆凌牛</h5>
    </body>
</html>

五.

img

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <title></title>
        <style>
            .box {
                width: 300px;
                height: 300px;
                border: 1px solid #000;
                padding: 10px;
                background: rgb(253,249,209);
                display: flex;
            }
            
            .box .border {
                flex: 1;
                border: 1px dashed #000;
                padding: 5px;
            }
        </style>
    </head>
    <body>
        <div class='box'>
            <div class='border'>
                <div>box-1</div>
            </div>
        </div>
    </body>
</html>



<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>第三题</title>
    <style>
        #box {
            width: 300px;
            height: 100px;
            margin: 100px auto;
        }

        .box1 {
            background: green;
            width: 100px;
            height: 100px;
            float: left;
        }

        .box2 {
            background: red;
            width: 100px;
            height: 100px;
            float: left;
        }

        .box3 {
            background: yellow;
            width: 100px;
            height: 100px;
            float: left;
        }
    </style>
</head>

<body>

    <div id="box">
        <div class="box1"></div>
        <div class="box2"></div>
        <div class="box3"></div>
    </div>

</body>

</html>

img

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>第四题</title>
</head>

<body>
    <h1>网页标题</h1>
    <header>
        <nav>
            <ul>
                <li><a href="#">首页</a></li>
                <li><a href="#">帮助</a></li>
            </ul>
        </nav>
    </header>

    <article>
        <h2>文章主标题</h2>
        <h2>文章子标题</h2>
        <p>文章正文</p>
    </article>

    <section>
        <h2>评论标题</h2>
        <p>评论正文</p>
    </section>

    <footer>
        <p>版权所有：陆凌牛</p>
    </footer>
</body>

</html>

img


<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>第五题</title>
    <style>
        .box {
            width: 250px;
            height: 250px;
            border: 1px solid #000;
            padding: 10px;
            background: rgb(253, 249, 209);
            display: flex;
            margin: 0 auto;
        }

        .box .border {
            flex: 1;
            border: 1px dashed #000;
            padding: 5px;
        }
    </style>
</head>

<body>
    <div class='box'>
        <div class='border'>
            <div>box-1</div>
        </div>
    </div>
</body>

</html>

img

很基础 , 就是有些浪费时间



```html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>test</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        p {
            width: 100px;
            height: 100px;
        }

        .box1 {
            margin-top: 100px;
            margin-left: 300px;
            background-color: green;
        }

        .box2 {
            margin-top: -100px;
            margin-left: 400px;
            background-color: red;
        }

        .box3 {
            margin-top: -100px;
            margin-left: 500px;
            background-color: yellow;
        }

    </style>
</head>
<body>
<div>
    <p class="box1"></p>
    <p class="box2"></p>
    <p class="box3"></p>
</div>

</body>
<!--<script src="/templates/js/vue.js"></script>-->
</html>

```