• 显示、隐藏


      通过css设置HTML页面上的显示、隐藏有以下几种方法:

      通过下面的页面更加清楚的了解:  

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>显示隐藏</title>
        <link rel="stylesheet" href="display.css">
    </head>
    <body>
        <div class="content">
            <div class="part1">part1</div>
            <div class="part2">part2</div>
            <div class="part3">part3</div>
        </div>
    </body>
    </html>
    .content
    {
        width: 400px;
        height: 200px;
        background: #0395e1;
        position: relative;
    }
    .part1
    {
        width: 100px;
        height: 100px;
        background: #e53935;
        position: absolute;
        left: 50px;
        top:50px;
        z-index:5;
    }
    .part2
    {
        width: 100px;
        height: 100px;
        background: orange;
        position: absolute;
        left: 50px;
        top:50px ;
        z-index:2;
    }
    .part3
    {
        width: 100px;
        height: 100px;
        background: orange;
        position: absolute;
        right: 50px;
        top:50px ;
    }

      当前显示为:

      1.用display:none进行设置

      现在对part3加入display:none

      

    .part3
    {
        width: 100px;
        height: 100px;
        background: orange;
        position: absolute;
        right: 50px;
        top:50px ;
        display: none;
    }

      页面显示:

      可以看到,现在part3被隐藏了

      2.用透明度opacity进行设置,当opacity值为0时,part2就在页面看不到了

      

    .part3
    {
        width: 100px;
        height: 100px;
        background: orange;
        position: absolute;
        right: 50px;
        top:50px ;
        opacity:0;
    }

      

      3.还可以通过z-index覆盖来实现

      一开始设置了三部分内容,但是part1层级比part2层级高 ,所以part2被part1覆盖了,如果要让part1隐藏,可以改变层级关系,让part2层级高于part1,便可以用part2遮挡part1,实现part1的隐藏。

      

    .part1
    {
        width: 100px;
        height: 100px;
        background: #e53935;
        position: absolute;
        left: 50px;
        top:50px;
        z-index:5;
    }
    .part2
    {
        width: 100px;
        height: 100px;
        background: orange;
        position: absolute;
        left: 50px;
        top:50px ;
        z-index:20;
    }
    .p

      

    ╰︶﹉⋛⋋⊱⋋๑๑⋌⊰⋌⋚﹉︶╯
  • 相关阅读:
    Transformer详解
    PAT 1012
    PAT 1011
    PAT 1010
    Jordan Lecture Note-3: 梯度投影法
    PAT 1009
    PAT 1008
    Jordan Lecture Note-2: Maximal Margin Classifier
    PAT 1007
    PAT 1006
  • 原文地址:https://www.cnblogs.com/zhangcheng001/p/10951514.html
Copyright © 2020-2023  润新知