<form role="form" method="post" action="http:/www.yourdomain.com/contact/send">
<div class="form-group">Name :
<input type="text" class="form-control" id="name" placeholder="Enter Name">
What is 'role'? I would remove that and give the form an ID, id="MyFrom".
You then give your <input>s IDs. NO, give them 'name's. example name='full_name'. That's how the action program will find them
'full_name', because I hate using tags and attributes like this.
Your action="http:/www.yourdomain.com/contact/send" should be a PHP file and needs that extension so the server will recognize it. action="http:/www.yourdomain.com/contact/send.php"
May not clear up all the problems but it's a start.