Step 1: create index.html file and implement as below code in it.
<h2>Hello World!</h2> <h3>Smaller heading!</h3>
Step 2: implement as below css code in html file.
<style> body { background: pink; } /* This is a multi-line comment */ h2, h3 { text-align: center; color: blueviolet; /* Set text color to blueviolet */ } </style>
Complete Code For Commenting Cascading Style Sheets Code lines.
<!DOCTYPE html> <html> <head> <title>How Do I Comments Cascading Style Sheets Code lines</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css"/> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> </head> <style> body { background: pink; } /* This is a multi-line comment */ h2, h3 { text-align: center; color: blueviolet; /* Set text color to blueviolet */ } </style> <body> <br/><br/> <div class="container"> <br><br><br> <div class="text-center"> <!-- How Do I Comments Cascading Style Sheets Code lines--> <h1 id="color" style="color: black;">How Do I Comments Cascading Style Sheets Code lines</h1> </div> <br> <div class="well"> <h2>Hello World!</h2> <h3>Smaller heading!</h3> </div> <br> </div> </body> </html>