<!DOCTYPE html>
<html>
<head>
<title>Titre du document</title>
<style>
input {
width: 90%;
padding: 10px;
margin: 5px;
outline: none;
}
input::placeholder {
color: #1c87c9;
opacity: 1;
}
input:placeholder-shown {
border: 1px solid #095484;
}
</style>
</head>
<body>
<form action="/action_page.php">
Prénom: <input type="text" name="firstname" placeholder="John" /><br />
<br />
Nom: <input type="text" name="lastname" placeholder="Lennon" /><br />
<br />
Adresse éléctronique: <input type="email" name="email" placeholder="VotreEmail@gmail.com" />
</form>
</body>
</html>