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Solution
Submitted over 2 years ago

I used CSS and HTML for creating a qr-code for windows and mobile

Enis67•140
@Enis67
A solution to the QR code component challenge
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Solution retrospective


What is not good in my css for relative? Another better ways to accomplish it?

What did you find difficult while building the project? Which areas of your code are you unsure of? Do you have any questions about best practices?

Code
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Community feedback

  • Melvin Aguilar 🧑🏻‍💻•61,020
    @MelvinAguilar
    Posted over 2 years ago

    Hello there 👋. Good job on completing the challenge !

    I have some suggestions about your code that might interest you.

    Metadata 🗃️:

    • The lang attribute is used to declare the language of the webpage. Add the lang attribute to the <html> tag with the value en.
    • The viewport meta tag is missing. the viewport meta tag is used to control the layout of the page on mobile devices. Add the viewport meta tag to the <head> tag: <meta name="viewport" content="width=device-width, initial-scale=1.0">.

      You can check your solution on a mobile device to see how your solution is distorted by not using this tag. ⚠️

    HTML 🏷️:

    • Wrap the page's whole main content in the <main> tag.
    • Since this component involves scanning the QR code, the image is not a decoration, so it must have an alt attribute. The alt attribute should explain its purpose. e.g. QR code to frontendmentor.io

    CSS 🎨:

    • To center an element vertically, you should use a height to its container. In this case it is recommended to use "min-height: 100vh" so that it occupies 100% of the viewport height. e.g.: body { min-height: 100vh; }
    • Setting the width of the component with a percentage or a viewport unit will behave strangely on mobile devices or large screens. You should use a max-width of 320px or 20rem to make sure that the component will have a maximum width of 320px on any device, also remove the width property with a percentage value.

    CSS Reset 🔄:

    • You should use a CSS reset. A CSS reset is a set of CSS rules that are applied to a webpage in order to remove the default styling of different browsers.

      CSS resets that are widely used:

      • Reset CSS
      • "My Custom CSS Reset" by JoshWComeau

    I hope you find it useful! 😄 Above all, the solution you submitted is great!

    Happy coding!

    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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