visibility and z-index in CSS

 <!DOCTYPE html>

<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <link rel="stylesheet" href="CSS/Visibility_z_index.css">
    <title>Visibility and z-index</title>
</head>

<body>
    <div class="box" id="box1"></div>
    <div class="box" id="box2"></div>
    <div class="box" id="box3"></div>
    <div class="box" id="box4"></div>
</body>

</html>





Below File is css/Visibility_z_index.css File.
.box {
    width: 170px;
    height: 170px;
    border: 2px solid #000000;
    /* display: inline-block; */
}

#box1 {
    /* z-index will work only for position: relative, absolute, fixed or sticky (Not for "static") */
    position: relative;
    top: 49px;
    z-index: 35;
    background-color: #008000;
}

#box2 {
    /* Main Difference between "display:none" and "visibility: hidden" is that
    "visibility: hidden" reserve space and "display: none" does not reserve space*/
    /* "display: none" will hide the element and the space */
    /* display: none; */
    /* "visibility: hidden" will hide the element but will show its empty space */
    /* visibility: hidden; */
    background-color: #ff0000;
    position: relative;
    top: 14px;
    z-index: -1;
}

#box3 {
    background-color: #0000ff;
}

#box4 {
    background-color: #ffff00;
}


Comments

Post a Comment