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Solution
Submitted over 1 year ago

QR code using HTML and CSS

Firdoshi•20
@Firdoshi
A solution to the QR code component challenge
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All feedbacks is welcome. Thank You in advance

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  • solvman•1,650
    @solvman
    Posted over 1 year ago

    Very well done! 🎊🎉🚀

    I have a few suggestions for you:

    • ⭐️ I suggest the use of semantic elements instead of just <div> and <span> (both are non-semantic). Semantic elements significantly improve the SEO and accessibility of your project. First, the <main> landmark element represents the primary content of the document and expands on the central topic of the document. You should wrap your content in <main>. Such widgets as cards are more suited to be constructed with the <article> element, which encapsulates reusable, self-contained content.

    • ⭐️ Titles and headings are usually denoted by <h1>, <h2>, <h3>, and so on. Do not skip levels of headings. Regular text is generally encapsulated by <p>. A card-like widget's most appropriate heading level is likely <h2>.

    With that being said, I would redo your code as so:

    <body>
      <main id="container">
        <h1 class="visually-hidden">Frontend Mentor project submission</h1>
        <article class="card">
          <img src="./images/image-qr-code.png" alt="QR Code">
          <h2>Improve your front-end skills by building projects</h3>
          <p>Scan the QR code to visit Frontend Mentor and take your coding skills to the next level</p>
        </article>
      </main>
      <footer class="attribution">
          ... attribution goes here
      </footer>
    </body>
    

    As mentioned above, the <h2> heading is the most appropriate for the card-like widget. To avoid breaking hierarchy heading rules, I added an invisible <h1> heading to announce "Frontend mentor project submission" to accessibility users. Visually hidden class (it is also called sr-only which is "screen reader only") for the <h1> :

    .visually-hidden {
      position: absolute;
      width: 1px;
      height: 1px;
      padding: 0;
      margin: -1px;
      overflow: hidden;
      clip: rect(0, 0, 0, 0);
      white-space: nowrap;
      border: 0;
    }
    

    Learn more about semantic HTML elements here

    In your case, align-items: center on .container does nothing. It controls the layout for Grid or Flex, which you do not need. Please remember that block-level elements stack one on top of the other. The only element that is not block level within the card is <img>, which could be "converted" to block level through a simple reset, which should be used almost on every project anyways:

    img {
        display: block;
        max-width: 100%;   /* ensures images does not overflow the container */
    }
    
    • ⭐️ To place the card in the middle of the screen, you could use Flex or Grid. I prefer the Grid since it is only a line shorter:
    body {
        height: max(500px, 100vh);
        display: grid;
        place-content: center;
    }
    
    • ⭐️ Consider using REM units for margin, padding, and font size.

    • ⭐️ Consider the use of custom global variables. 👍

    Otherwise, very well done!🎊 Keep it up!👏 I hope you find my comments useful 🫶

    Marked as helpful

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How does the accessibility report work?

When a solution is submitted, we use axe-core to run an automated audit of your code.

This picks out common accessibility issues like not using semantic HTML and not having proper heading hierarchies, among others.

This automated audit is fairly surface level, so we encourage to you review the project and code in more detail with accessibility best practices in mind.

How does the CSS report work?

When a solution is submitted, we use stylelint to run an automated check on the CSS code.

We've added some of our own linting rules based on recommended best practices. These rules are prefixed with frontend-mentor/ which you'll see at the top of each issue in the report.

The report will audit all CSS, SCSS and Less files in your repository.

How does the HTML validation report work?

When a solution is submitted, we use html-validate to run an automated check on the HTML code.

The report picks out common HTML issues such as not using headings within section elements and incorrect nesting of elements, among others.

Note that the report can pick up “invalid” attributes, which some frameworks automatically add to the HTML. These attributes are crucial for how the frameworks function, although they’re technically not valid HTML. As such, some projects can show up with many HTML validation errors, which are benign and are a necessary part of the framework.

How does the JavaScript validation report work?

When a solution is submitted, we use eslint to run an automated check on the JavaScript code.

The report picks out common JavaScript issues such as not using semicolons and using var instead of let or const, among others.

The report will audit all JS and JSX files in your repository. We currently do not support Typescript or other frontend frameworks.

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