<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<title>My Awesome Login Page</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.6.1/css/all.css" integrity="sha384-gfdkjb5BdAXd+lj+gudLWI+BXq4IuLW5IT+brZEZsLFm++aCMlF1V92rMkPaX4PP" crossorigin="anonymous">
</head>
<body>
<div class="container h-100">
<div class="d-flex justify-content-center h-100">
<div class="user_card">
<div class="d-flex justify-content-center">
<div class="brand_logo_container">
<img src="https://cdn.freebiesupply.com/logos/large/2x/pinterest-circle-logo-png-transparent.png" class="brand_logo" alt="Logo">
</div>
</div>
<div class="d-flex justify-content-center form_container">
<form>
<div class="input-group mb-3">
<div class="input-group-append">
<span class="input-group-text"><i class="fas fa-user"></i></span>
</div>
<input type="text" name="" class="form-control input_user" value="" placeholder="username">
</div>
<div class="input-group mb-2">
<div class="input-group-append">
<span class="input-group-text"><i class="fas fa-key"></i></span>
</div>
<input type="password" name="" class="form-control input_pass" value="" placeholder="password">