How to create notification buttons with CSS?

CSS Web Development Front End Technology

Following is the code to create notification buttons with CSS −

Example

<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body{
   font-family: monospace,serif,sans-serif;
}
.notificationContainer {
   margin: 20px;
   background-color: rgb(254, 255, 171);
   color: black;
   text-decoration: none;
   padding: 15px 26px;
   font-size: 32px;
   position: relative;
   display: inline-block;
   border-radius: 2px;
   border:2px solid black;
}
.notificationContainer:hover {
   background: rgb(43, 8, 138);
   color:white;
}
.notificationContainer .notificationBadge {
   position: absolute;
   top: -10px;
   right: -10px;
   padding: 5px 10px;
   border-radius: 50%;
   background-color: rgb(0, 170, 51);
   color: white;
}
</style>
</head>
<body>
<h1>Notification Button Example</h1>
<a href="#" class="notificationContainer">
<span>Messages</span>
<span class="notificationBadge">99+</span>
</a>
</body>
</html>