​x
 
<html>
<head>
<title>CSS tutorial</title>
<style type="text/css">
form {
    position:relative; margin-top:30px;
}
input {
    outline: 4px ridge navy;
}
input:focus {
    outline: 3px groove white;
}
input {
    margin:15px;
}
</style>
</head>
​
<body>
​
<form>
    <input type="text" value="your first name" /><br />
    <input type="text" value="your last name" /><br />
    <input type="text" value="age" />
</form>
​
</body>
</html>