html_css/z_index.html at main · juliocelon/html_css · GitHub

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<!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>z_index</title>
    <style>
        body{
            background-color: #F2F3F4;
            font-family: Arial, Helvetica, sans-serif;
        }
        div
        {
            position: absolute;
        }
        .c2
        {
            position: relative;
            top: 150px;
            width: 100%;
        }
        .container1
        {
            background-color: red;
            width: 250px;
            height: 120px;
        }
        .container2
        {
            background-color: green;
            width: 400px;
            height: 80px;
            padding: 10px;
            box-sizing: border-box;
        }
        .container3
        {
            background-color: red;
            width: 250px;
            height: 60px;
            z-index: 2;
            padding: 10px;
            box-sizing: border-box;
        }
        .container4
        {
            background-color: green;
            width: 300px;
            height: 130px;
            z-index: 1;
        }

        .c3
        {
            position: relative;
            top: 320px;
            width: 100%;
        }
        .container5
        {
            background-color: red;
            width: 250px;
            height: 160px;
            z-index: 2;
            padding: 10px;
            box-sizing: border-box;
        }
        .container6
        {
            background-color: green;
            width: 400px;
            height: 200px;
            padding: 10px;
            z-index: 1;

        }
        .container55
        {
            background-color: grey;
            width: 350px;
            height: 130px;
            padding: 10px;
            z-index: 3;
        }
        .explanation
        {
            position: relative;
            top: 280px;
            padding-bottom: 25px;
        }
    </style>
</head>
<body>
    <h1>z-index</h1>
    <p>Case 1</p>
    <div class="c1">
        <div class="container1">Container 1</div>
        <div class="container2">Container Green. <br>By its position on the html (down Container Red), <br> This contanier is up to Container Red </div>
    </div>


    <div class="c2">
        <p>Case 2</p>
        <div class="container3">Container Red. <br> z-index:2;</div>
        <div class="container4"><br><br><br><br>Container Green. <br>z-index:1;</div>
    </div>


    <div class="c3">
        <p>Case 3</p>
        <div class="container5">Container Red. <br> z-index:2;</div>

        <div class="container6">&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;Container Green. <br>&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;&emsp;z-index:1;<br><br><br><br><br>
            <div class="container55"><br><br><br>Container Grey. <br> z-index:3; <br> Son of Container Green</div>
        </div>
        <p class="explanation">On Case 3, Grey has z-index bigger (3) than Red(2), but Gray is a -div- inside of Green, so, never will have priority bigger than its father (Green)</p>
    </div>
</body>
</html>