Questo è il mio HTML:
codice HTML:
<? session_start(); ?>
<!DOCTYPE html>
<html>
<head>
<title>Axive Login</title>
<link rel="icon" href="http://www.axive.it/images/favicon.png" type="image/png">
<link rel="stylesheet" type="text/css" href="style.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
</head>
<body>

<header><a href="index.php" id="logo"><img src="http://www.axive.it/images/logo.png"></a></header>

<div style="display: table; margin: 0 auto; height: 100%;">
<div id="login">
<form method="post" action="dbconnection.php">
<span class="formlabel">Username</span>
<input style="text-transform: none; margin-bottom: 20px;" type="text" name="username"><br>
<span class="formlabel">Password</span>
<input style="text-transform: none"  type="password" name="password"><br>
<input style="text-transform: none; margin-top: 30px;"  type="submit" name="userlogin" class="button" id="loginsubmit" value="">
</form>
</div></div>

</body>
</html>
Questo il CSS
http://www.axive.it/style.css