HTML and CSS Knowledge and Common Issues

HTML

HTML (HyperText Markup Language) is the backbone of web development. It is used to structure and format the content of a webpage.

Some common HTML elements include: https://www.w3schools.com/html/html_elements.asp

Common HTML issues include: https://www.w3schools.com/html/html_errors.asp

CSS

CSS (Cascading Style Sheets) is used to style and format the appearance of webpages.

Some common CSS properties include: https://www.w3schools.com/css/css_properties.asp

Common CSS issues include: https://www.w3schools.com/css/css_errors.asp

Combining HTML and CSS

It is common to combine HTML and CSS to create visually appealing and well-structured webpages.

Some best practices for combining HTML and CSS include:

• Using external stylesheets
• Organizing CSS by element
• Using meaningful class and id names
• Avoiding deeply nested selectors

Remember to always validate your HTML and CSS code using tools like the W3C validator (https://validator.w3.org/) to ensure best practices are followed and to avoid common issues.