<form method="post" action="check_login.php">
<input class="textbox" name="username" type="text" placeholder="Login">
<input class="textbox" name="password" type="password" placeholder="Password">
<div id="buttonPlace">
<p>Remember Me</p>
<button id="buttonLogin" type="submit">Sign up</button>
</div>
</form>
solved HTML Form Button