In the last topic, the creation of a page with two columns was considered. Similarly, we can add more columns to the page and make the structure more complex. For example, let’s add a second sidebar to the web page:
<!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>Block Layout in HTML5</title>
<style>
div {
margin: 10px;
border: 1px solid black;
font-size: 20px;
height: 80px;
}
#header {
background-color: #ccc;
}
#leftSidebar {
background-color: #ddd;
}
#rightSidebar {
background-color: #bbb;
}
#main {
background-color: #eee;
height: 200px;
}
#footer {
background-color: #ccc;
}
</style>
</head>
<body>
<div id="header">Header</div>
<div id="leftSidebar">Left Sidebar</div>
<div id="rightSidebar">Right Sidebar</div>
<div id="main">Content area</div>
<div id="footer">Footer</div>
</body>
</html>
Here again, the code for both sidebars should go before the main content block that wraps around them.
Now let’s change the styles of both sidebars and the main block:
<!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>Block Layout in HTML5</title>
<style>
div {
margin: 10px;
border: 1px solid black;
font-size: 20px;
height: 80px;
}
#header {
background-color: #ccc;
}
#leftSidebar {
background-color: #ddd;
float: left;
width: 150px;
}
#rightSidebar {
background-color: #bbb;
float: right;
width: 150px;
}
#main {
background-color: #eee;
height: 200px;
margin-left: 170px;
margin-right: 170px;
}
#footer {
background-color: #ccc;
}
</style>
</head>
<body>
<div id="header">Header</div>
<div id="leftSidebar">Left Sidebar</div>
<div id="rightSidebar">Right Sidebar</div>
<div id="main">Content area</div>
<div id="footer">Footer</div>
</body>
</html>
Again, for both floating blocks – sidebars, we need to set the width and property float- one has a value left, and the other has a value right.
