- CSS - Home
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- CSS - Validations
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CSS - Validations
CSS Validation refer to process to checking correctness of CSS rules in a webpage. Validation is the process of checking something against a rule. When you are a beginner, it is very common that you will commit many mistakes in writing your CSS rules. How you will make sure whatever you have written is 100% accurate and up to the W3 quality standards?
W3C CSS Validator is official CSS validator developed by World Wide Web Consortium. This validator checks your css by either file upload, direct input, or using URL.
CSS Validation Example
The image below shows css validation done by W3C:
Validation Warnings
When you validate your CSS, you may see warnings. These warnings do not stop your CSS from working, but they indicate that something is not perfect. Here are some common validation warnings:
- Deprecated Properties: Some CSS properties are old and should not be used anymore. Its better to use newer alternatives.
- Invalid Values: If you use a value that does not fit with the property, a warning will show up. Make sure to check the correct values for each property.
- Redundant Code: Warnings may point out code that is not needed because it does not change anything. Cleaning this up can help your CSS be more efficient.
- Selectors Too Specific: If your CSS selectors are too specific, they can make your code harder to read and maintain. Try to keep selectors simple.
Why Validate Your CSS Code?
Validating the stylesheet of a webpage is important for ensuring that website displays and functions correctly across different browsers and devices.
- Improves Browser Compatibility: Validation makes sure your CSS follows the rules, so your webpage looks good on all browsers.
- Enhances Performance: Clean and correct CSS helps your webpage load faster, while mistakes or extra code can slow it down.
- Debugging Made Easier: Validating your CSS helps you find and fix mistakes, making it easier to manage your code.
- SEO Benefits: Well-organized and correct CSS can improve the user experience and make your site faster. This way your site can get ranked easily in search engines.
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