some question about the html and css

I think you don't really know the concept of using css. It minimizes the lines for writing codes because using css we can apply that same css file to multiple html file. It is also not too hard but we have to get used to it and practice hard so that we can use it in future. Well first response has explained it in a good manner. Not left too much for me to explain.

I love playing with both. They both have their strengths and weaknesses. Css picks up where html does not. You can do anything from changing text colors and among other. With css, you don't have to rely on tables to create tables with it. I have written a little about html and css online.

Well, CSS makes HTML clearer and easier to use, generally. CSS lets you format things outside of the HTML. For example, if you want bolded text to have a certain font, size, and color, then you can fix that in the CSS. I had to learn basic CSS and it's a little different to pick up at first, but once you learn it it's rather easy to use. The reason CSS is used with HTML is because HTML is not generally a formatting language. It is used to define what content is in a document, but not that format of that content. For example, you can say that this is bold or that this piece is a paragraph. However, with CSS it helps you format that paragraph (font, spacing, etc) and format the bolded text. If you want a really good site to help you learn some CSS, this site is very good and very easy to understand and it walks you through how to do things: http://www.w3schools.com/css/css_intro.asp Good luck with CSS and if you need any more help with it, just let me know!