<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container">
<div class="row">
<center>
<form action="checking.php" method="post" name="Login_Form">
<div class="colorgraph"><br><br><br>
<font face="Lato" size="8">Login</font><br><br><br>
<input type="text" class="form-control" name="username" placeholder="Username atau email" required="" autofocus="" />
··
<input type="password" class="form-control" name="password" placeholder="Password" required=""/><br><br>
<button class="colorgraph3"><font face="Lato" size="5" color="f7fdca">Login</font></button><br><br>
<hr width="520" color="#f7fdca">
</div>
</form>
</center>
</form>
</div>
</div>