templates/certificate_check.html

{%load static%}
<!DOCTYPE html>
<html lang="en" dir="ltr">
  <head>
    <meta charset="utf-8">
    <title></title>
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.1/dist/css/bootstrap.min.css" integrity="sha384-zCbKRCUGaJDkqS1kPbPd7TveP5iyJE0EjAuZQTgFLD2ylzuqKfdKlfG/eSrtxUkn" crossorigin="anonymous">
    <link rel="stylesheet" href="{%static 'main.js'%}">
    <link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" type="text/css" href="https://cdn.jsdelivr.net/npm/toastify-js/src/toastify.min.css">
<link href="https://fonts.googleapis.com/css2?family=Patua+One&display=swap" rel="stylesheet">
  </head>
  <body>


    <nav class="navbar navbar-expand-lg navbar-dark" style="font-family: 'Patua One', cursive; background-color:purple;font-size:2.5em;">
      <h1 style="color:white;padding:1%" class="brand">Switch Learning</h1>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>

  <div class="collapse navbar-collapse" id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto">
    </ul>
    <form class="form-inline my-2 my-lg-0">
      <a href="{%url 'home'%}"><button type="button" class="btn btn-primary" name="button">Home</button></a>
    </form>
  </div>
</nav>

    <div class="container">
      <br>
      <br>
      <div class="jumbotron">
        <h3>Check certificate:</h3>
        <h5 style="color:red;">{{err_message}}</h5>
        <br>

        <div class="check">
            <p>Provide the hash of a certificate to check whether it is verified and who was the original issuer.</p>
            <div class="input-group">
                <input type="text" class="form-control form-control-lg mr-2" id="check_certificate">
                <button class="btn btn-lg btn-info" id="perform_check">Check!</button>
            </div>
        </div>
      </div>

    </div>
    {%csrf_token%}
    <script type="module" crossorigin src="{%static 'most.js'%}"></script>
  </body>
</html>