My HTML Code presents a challenge that I need help with:
<!DOCTYPE html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css" integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
<script src="https://code.jquery.com/jquery-3.3.1.slim.min.js" integrity="sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo" crossorigin="anonymous"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.7/umd/popper.min.js" integrity="sha384-UO2eT0CpHqdSJQ6hJty5KVphtPhzWj9WO1clHTMGa3JDZwrnQq4sF86dIHNDz0W1" crossorigin="anonymous"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js" integrity="sha384-JjSmVgyd0p3pXB1rRibZUAYoIIy6OrQ6VrjIEaFf/nJGzIxFDsf4x0xIM+B07jRM" crossorigin="anonymous"></script>
</head>
<style>
.card
{
background-color: #EFF3FC!important;
}
.btnBlue
{
background: #1467ba;
height: 25px;
width: 70px;
font-size: 14px;
color: white;
}
</style>
<body>
<div class="container-fluid d-flex flex-column min-vh-100 justify-content-center align-items-center text-center">
<div class="row no-gutters">
<div class="col-md-4">
<div class="card card-block w-100 h-100">
<nav class="navbar navbar-expand-lg navbar-light" style="background-color: #EFF3FC;">
</nav>
<p class="h3 text-primary">
Sign In
<br>
<br>
</p>
<form action="{% url 'landing' %}" method="POST">
<input type="email" id="Username" name="username" placeholder="Username">
<br> <br>
<input type="password" id="Password" name="password" placeholder="Password">
<br> <br>
<h6>
<p class="text-danger">
<small> The Username or Password you entered does not match our records. Please try again. </small>
<br>
</p>
</h6>
<button type="submit" class="btn btn-primary align-center btn-sm">Log In</button>
</form>
<br> <br> <br> <br> <br>
</div>
</div>
<div class="col-md-8">
<div class="card card-block w-100 h-100">
<p class="h3 text-primary">
<br> <br>
Sign Up
<br>
<br>
</p>
<p>
Don't have an account yet? Enter your username and we'll send you a link for a secure sign-up experience!
<br>
<br>
</p>
<div class="form-group">
<input type="email" id="Email" name="Email" placeholder="Email">
<br>
</div>
<h6>
<p class="text-danger" hidden>
<small> Please check the email you've entered and try again! </small>
<br>
</p>
</h6>
<div class="form-group">
<button type="submit" class="btn btn-primary align-center btn-sm">Submit</button>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
The sizing of the Columns (md-4 and md-8) keeps changing based on the amount of text present. Removing certain lines affects their width dynamically. How can this be fixed to maintain a consistent width irrespective of the content?