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Solution
Submitted about 2 years ago

Responsive QR Code Component Using Bootstrap

bootstrap
Jason Ritter•40
@Higokian
A solution to the QR code component challenge
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Solution retrospective


Questions

1. Nesting

Any tips on how to determine how many layers will be needed? Specifically when for flex-box/boostrap? This is probably the biggest thing I struggle with.

2. Centering Card

This question kind of ties in the the nesting question. My biggest issue was getting the card to center horizontally and vertically. I ended up giving the body class="d-flex flex-column justify-content-center" and then a container nested within that with class="d-flex justify-content-center". Is there a better solution to this?

I appreciate any and all feedback!

Code
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Community feedback

  • Shivraj K•400
    @Shivraj-K09
    Posted about 2 years ago
    • Nesting: The number of layers needed for your HTML structure will depend on the complexity of your layout and the design requirements. As a general rule, you should try to keep your HTML structure as simple as possible, without sacrificing the design. For example, in the code you provided, you have used Bootstrap classes to style your card container, which makes it easier to manage the layout.
    • Centering Card: Using Bootstrap classes like d-flex and justify-content-center is a good way to center your card horizontally and vertically. However, if you need to center an element in the middle of the page without using Bootstrap, you can give the parent container a fixed height and use flexbox to center the child element. For example:
    body {
      display: flex;
      justify-content: center;
      align-items: center;
    }
    
    .container {
      height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
    }
    
    • This will center the .container element both horizontally and vertically on the page.
    • Overall, I think your code looks great and you are using Bootstrap classes effectively. Keep up the good work! Happy Coding 😉.
    Marked as helpful
  • Sebastian•170
    @Debesta
    Posted about 2 years ago

    Well, You can delete div with class .card-body, because You don't refer to it anywhere, and if You want to get gap between elements in card and edge of card You can use padding on div with class .card

  • Abdul Khaliq 🚀•72,380
    @0xabdulkhaliq
    Posted about 2 years ago

    Hello there 👋. Congratulations on successfully completing the challenge! 🎉

    • I have other recommendations regarding your code that I believe will be of great interest to you.

    HTML 🏷️:

    • This solution may cause accessibility errors due to lack of semantic markup, which causes lacking of landmark for a webpage and allows accessibility issues to screen readers, due to accessibility errors our website may not reach its intended audience, face legal consequences, and have poor search engine rankings, highlighting the importance of ensuring accessibility and avoiding errors.

    • What is meant by landmark ?, They used to define major sections of your page instead of relying on generic elements like <div> or <span>. They are use to provide a more precise detail of the structure of our webpage to the browser or screen readers

    • For example:
      • The <main> element should include all content directly related to the page's main idea, so there should only be one per page
      • The <footer> typically contains information about the author of the section, copyright data or links to related documents.

    • So resolve the issue by replacing the <div class="attribution"> element with the proper semantic element <footer> in your index.html file to improve accessibility and organization of your page

    .

    I hope you find this helpful 😄 Above all, the solution you submitted is great !

    Happy coding!

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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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