<!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" />
<link rel="stylesheet" href=
<script src=
</script>
</head>
<body>
<div class="o-container" style="padding:1em;">
<center>
<h1 style="color:green;">
GeeksforGeeks
</h1>
<strong>Primer CSS Forms</strong>
<br/>
<br/>
</center>
<form>
<div class="form-group successed">
<div class="form-group-header">
<label for="name">Name</label>
</div>
<div class="form-group-body">
<input class="form-control" type="text"
id="name" placeholder="Enter your name"
aria-describedby="name-input-validation"/>
</div>
<p class="note success" id="about-input-validation">
Your name is valid
</p>
</div>
<div class="form-group warn">
<div class="form-group-header">
<label for="age">Name</label>
</div>
<div class="form-group-body">
<input class="form-control" type="number"
id="age" placeholder="Enter your age"
aria-describedby="age-input-validation"/>
</div>
<p class="note warning" id="age-input-validation">
Your age seems to be incorrect
</p>
</div>
<div class="form-group errored">
<div class="form-group-header">
<label for="about">Enter about you</label>
</div>
<div class="form-group-body">
<textarea class="form-control" id="about"
aria-describedby="about-input-validation">
</textarea>
</div>
<p class="note error" id="about-input-validation">
Your about text has some error.
</p>
</div>
</form>
</div>
</body>
</html>