public/404.html from sanger/limber

public/404.html
Summary

Maintainability

Test Coverage

Issues
<!DOCTYPE html>
<html>
  <head>
    <title>The page you were looking for doesn't exist (404)</title>
    <style type="text/css">
      body {
        font-family: -apple-system, system-ui, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
          sans-serif;
        font-size: 1rem;
        font-weight: normal;
        line-height: 1.5;
        color: #292b2c;
        padding: 100px 15px;
      }
      div.dialog {
        margin-bottom: 2rem;
        background-color: #eceeef;
        padding: 4rem 2rem;
      }
      h1 {
        font-size: 2.5rem;
        margin-bottom: 0.5rem;
        font-family: inherit;
        font-weight: 500;
        line-height: 1.1;
        color: inherit;
      }
      .status-code {
        color: #0275d8;
      }
    </style>
  </head>

  <body>
    <!-- This file lives in public/404.html -->
    <div class="dialog">
      <h1>
        <span class="status-code">&#128270;404</span>
        <small>The page you were looking for doesn't exist.</small>
      </h1>
      <p>
        You may have mistyped the address or the page may have moved. If you didn't expect to end up here, please let us
        know.
      </p>
    </div>
  </body>
</html>