• HTML连载48-清除浮动的其中两种方式


    一、清除浮动的方式一

    给前面一个父元素设置高度,​注意:企业开发中能不写高度就不写高度

     
    
    <!DOCTYPE html>
    
    <html lang="en">
    
    <head>
    
        <meta charset="UTF-8">
    
        <title>D131_ClearFloat</title>
    
        <style>
    
            .smallbox1{
    
                width:100px;
    
                height:100px;
    
                background-color: red;
    
                boder:3px solid black;
    
                margin:5px;
    
                float:right;}
    
            .smallbox2{
    
                width:100px;
    
                height:100px;
    
                background-color: red;
    
                boder:3px solid black;
    
                margin:5px;}
    
            .smallbox3{
    
                width:100px;
    
                height:100px;
    
                background-color: red;
    
                boder:3px solid black;
    
                margin:5px;}
    
            .smallbox4{
    
                width:100px;
    
                height:100px;
    
                background-color: red;
    
                boder:3px solid black;
    
                margin:5px;}
    
            .smallbox5{
    
                width:100px;
    
                height:100px;
    
                background-color: red;
    
                boder:3px solid black;
    
                margin:5px;}
    
            .smallbox6{
    
                width:100px;
    
                height:100px;
    
                background-color: red;
    
                boder:3px solid black;
    
                margin:5px;}
    
            .bigbox1,.bigbox2{
    
                /*400px;*/
    
                /*400px;*/
    
                background-color: green;
    
                border:3px black solid;
    
            }
    
    </style>
    
    </head>
    
    <body>
    
    <div class="bigbox1">
    
        <div class="smallbox1"></div>
    
        <div class="smallbox2"></div>
    
        <div class="smallbox3"></div>
    
    </div>
    
    <div class="bigbox2">
    
        <div class="smallbox4"></div>
    
        <div class="smallbox5"></div>
    
        <div class="smallbox6"></div>
    
    </div>
    
    </body>
    
    </html>
    
     

    二、清除浮动的第二种方式

    给后面的属性添加clear属性

    clear属性取值:

    none:默认取值,按照浮动元素的排序规则进行排序(左浮动找左浮动,右浮动找右浮动)

    left:不要找前面的左浮动元素

    right:不要找前面的右浮动元素

    both:不要找前面的左浮动和有浮动元素

    例如:我们不设置大盒子的宽高,小盒子会把大盒子撑起来,但是两个大盒子会因此而在一行上

           .smallbox1{
    
                100px;
    
                height: 100px;
    
                float:left;
    
                background-color: red;
    
                border:2px solid black;
    
            }
    
            .smallbox2{
    
                100px;
    
                height: 100px;
    
                float:left;
    
                background-color: red;
    
                border:2px solid black;
    
            }
    
            .smallbox3{
    
                100px;
    
                height: 100px;
    
                float:left;
    
                background-color:blue;
    
                border:2px solid black;
    
            }
    
            .smallbox4{
    
                100px;
    
                height: 100px;
    
                float:left;
    
                background-color: blue;
    
                border:2px solid black;
    
            }
    
        </style>
    
    </head>
    
    <body>
    
    <div class="bigbox1">
    
        <div class="smallbox1"></div>
    
        <div class="smallbox2"></div>
    
    </div>
    
    <div class="bigbox2">
    
        <div class="smallbox3"></div>
    
        <div class="smallbox4"></div>
    
    </div>
    
    </body>

    我们使用clear属性在第三个小盒子上,这样就可以另起一行了(第四个就不用,因为我们就想让第三个挨着第四个),只需要第三个小盒子的代码修改代码

            .smallbox3{
    
                clear:left;
    
                100px;
    
                height: 100px;
    
                float:left;
    
                background-color:blue;
    
                border:2px solid black;
    
            }

    ​注意点:margin属性失效了,不失效的方式我们下次再说。

    三、源码:

    D131_ClearFloat.html

    D132_CLearAttribute.html

    地址:

    https://github.com/ruigege66/HTML_learning/blob/master/D131_ClearFloat.html

    https://github.com/ruigege66/HTML_learning/blob/master/D132_CLearAttribute.html

    2.CSDN:https://blog.csdn.net/weixin_44630050(心悦君兮君不知-睿)

    3.博客园:https://www.cnblogs.com/ruigege0000/

    4.欢迎关注微信公众号:傅里叶变换,个人账号,仅用于技术交流,后台回复“礼包”获取Java大数据学习视频礼包

     

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  • 原文地址:https://www.cnblogs.com/ruigege0000/p/11817220.html
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