modal form not submitting - html

Question

The problem is that when i click on the button nothing happens at all which it should be at least to me.
I don't need a direct answer. Just a hint, or a pointer of what can be going on.
Here is part of the code for the modal form
<div class="modal-body">
<form Method="POST" id="Signin-Form" role="form">
<div class="form-group">
<div class="input-group">
<div class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></div>
<input name="txt_uname" id="txt" type="text" class="form-control input-lg" placeholder="Enter User Name" />
</div>
</div>
<div class="form-group">
<div class="input-group">
<div class="input-group-addon"><span class="glyphicon glyphicon-envelope"></span></div>
<input name="txt_umail" id="email" type="text" class="form-control input-lg" placeholder="Enter Email" required data-parsley-type="email" />
</div>
</div>
<div class="form-group">
<div class="input-group">
<div class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></div>
<input name="txt_upass" id="pass1" type="password" class="form-control input-lg" placeholder="Enter Password" required data-parsley-length="[6, 10]" data-parsley-trigger="keyup" />
</div>
</div>
<div class="form-group">
<div class="input-group">
<div class="input-group-addon"><span class="glyphicon glyphicon-lock"></span></div>
<input name="txt_upass2" id="pass2" type="password" class="form-control input-lg" placeholder="Confirm Password" required data-parsley-length="[6, 10]" data-parsley-trigger="keyup" />
</div>
</div>
<button type="submit" class="btn btn-success btn-block btn-lg"><i class="glyphicon glyphicon-open-file">CREATE ACCOUNT!</i></button>
</form>

Answer 1

You need to add action attribute to the form to be able to send the form-data when the form is submitted.
Sample code below
<form action="submittedpage.php" method="post">
Name: <input type="text" name="name"><br>
E-mail: <input type="text" name="email"><br>
<input type="submit">
</form>
After you click submit button, the form data is sent for processing to a PHP file named "submittedpage.php". The form data is sent with the HTTP POST method.
To display the submitted data you could simply echo all the variables. The "submittedpage.php" see the code below:
Welcome <?php echo $_POST["name"]; ?><br>
Your email address is: <?php echo $_POST["email"]; ?>
You can see this link for more info in form handling.
https://www.w3schools.com/php/php_forms.asp
Hope this helps.