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      Course
      Layers

      CSS Tutorial

      This CSS tutorial is designed for beginners to navigate through the essentials and intricate aspects of CSS styling. Upon finishing this tutorial, participants will possess a comprehensive understanding of CSS, setting a solid foundation for further exploration and mastery. This guide aims to equip you with the skills necessary to transform your visions into visually appealing web designs, laying the groundwork for your journey towards becoming an accomplished web designer.

      Layers

      In CSS, you can create layers of various divisions. CSS z-index property can be combined with the position property to create a layer effect.
      The z-index property specifies the stacking order of an element. You can specify which element should come on top and which at bottom.
      A z-index property can help you to create more complex webpage layouts.

      CSS Layers - With z-index Property

      The following example demonstrates how to create layers using z-index property. The elements with higher z-index value are positioned above the elements of lower z-index value 
      <html>
      <head>
      <style>
         .box1 {
            position: absolute;
            height: 100px;
            width: 100px;
            background-color: red;
            z-index: 1;
            padding: 3px;
            left: 10px;
            top: 10px;
         }
         .box2 {
            position: absolute;
            height: 100px;
            width: 100px;
            background-color: lightblue;
            z-index: 2;
            padding: 5px;
            margin: 10px;
            left: 50px; 
            top: 30px;
         }
         .box3 {
            position: absolute;
            height: 100px;
            width: 100px;
            background-color: yellow;
            z-index: 3;
            padding: 5px;
            margin: 20px;
            left: 80px; 
            top: 50px;
         }
         p {
            margin-top: 200px;
         }
      </style>
      </head>
      <body>
         <p>The element with z-index value of 1 appears behind the elements with the z-index value of 2 and 3.</p>
         <div class="box1">
            CSS z-index: 1
         </div>
         <div class="box2">
            CSS z-index: 2
         </div>
         <div class="box3">
            CSS z-index: 3
         </div>
      </body>
      </html>

      CSS Layers - Images and Text

      The following example demonstrates how to create layers using z-index property. Higher z-index elements are positioned above lower z-index elements 
      <html>
      <head>
      <style>
         img {
            height: 200px;
            width: 200px;
            position: absolute;
            left: 0px;
            top: 0px;
            z-index: 2;
            margin: 5px;
         }
         h1 {
            margin-top: 30px;
            z-index: 1;
            color: red;
         }
      </style>
      </head>
      <body>
         <img src="images/shop.png">
         <h3>Tutorialspoint</h3>
      </body>
      </html>

      CSS Layers - Without z-index Property

      The following example demonstrates how to create layers without using z-index property 
      <html>
      <head>
      <style>
         .box1 {
            position: absolute;
            height: 210px;
            width: 210px;
            background-color: red;
            padding: 10px;
            left: 10px;
            top: 10px;
         }
         .box2 {
            position: absolute;
            height: 150px;
            width: 150px;
            background-color: lightblue;
            padding: 10px;
            margin: 10px;
            left: 30px; 
            top: 30px;
         }
         .box3 {
            position: absolute;
            height: 100px;
            width: 100px;
            background-color: yellow;
            padding: 5px;
            margin: 10px;
            left: 60px; 
            top: 60px;
         }
      </style>
      </head>
      <body>
         <div class="box1">
            Box 1
         </div>
         <div class="box2">
            Box 2
         </div>
         <div class="box3">
            Box 3
         </div>
      </body>
      </html>