Example

Z-Index

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">
    <link name="favicon" type="image/x-icon" href="https://skillzam.com/uploads/system/e353194f3b7cd1b75d69c3ab88041985.png" rel="shortcut icon" />
    <title>Z-Index</title>

    <style>

        .football {
            position:absolute;
            z-index: -1;
        }

        .doggy {
            position:absolute;
            z-index: 0;
        }

        .skillzam {
            position: absolute;
            z-index: 1;
        }

    </style>

</head>
<body>
<!--
    z-index property specifies the stack order of an element.
    z-index only works on positioned elements:
        - position: absolute
        - position: relative 
        - position: fixed 
        - position: sticky
        - flex items
-->

    <h1>Demo: Z-Index </h1> 

    <img class="skillzam" src="/notes/examples/assets/img/skillzam.png" alt="skillzam logo" style="width:40%" title="Image#1">

    <img class="doggy" src="/notes/examples/assets/img/doggy.png" alt="doggy Photo" style="width:100%" title="Image#1">

    <img class="football" src="/notes/examples/assets/img/football.jpg" alt="football black & White" style="width:100%" title="Image#1">

</body>
</html>

Output

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