How to creat a Form using HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <link rel="stylesheet" href="style.css">
</head>
<body>
    <h1>Register</h1>
    <form>
        First name:<input type="text">
        Last name:<input type="text"><br>
        Email:<input type="text"><br>
        password:<input type="password"><br>
        Date of birth:<input type="date"><br>
        select:<input type="radio" name="gender">male
        <input type="radio" name="gender">female
        <input type="radio" name="gender">under18
        <input type="radio" name="gender">18+<br>
        phon no:<input type="text"><br>
        Address:<input type="text"><br>
        Relagiyon:<input type="radio"name="relageyon">Muslim
        <input type="radio"name="relageyon">Hindu
        <input type="radio"name="relageyon">Bodho
        <input type="radio"name="relageyon">Christan <br>
        <button type="submit"value="submit">SUBMIT</button>


    </form>
</body>
</html>
((((**************************this is the css of this html file*********************************))))
h1{
    color: brown;
}
form{
    color:gold;
}
body{
    background-color:black;
}