CSS writing should pay attention to 15 problems

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Today in the "E Road" to see this article feel very good to take over, oneself also just began to learn CSS just to be able to understand the web standardization. I used to pay little attention to these things! But we do SEO optimization is actually the most important or user experience, user experience how can embody it? In fact, the front-end design to do well! It's not so lame! All right, let's not talk about the main content.

1, do not use a small picture to do background tile. That's why a lot of people don't use 1px. Width high 1px picture tile a width high 200px area, need 200*200=40, 000 times, occupy resources.

2, no border. The recommended wording is border:none; haha, I've been using this. border:0; Only defines a border with a width of zero, but the border style, color, or browser resolution, consumes resources.

3. Use the * wildcard character with caution. The so-called wildcard character, that is, all the tags in the CSS initialization, regardless of the use of unused, outdated advanced, non-discriminatory, so that a large amount of resources to occupy. To have a selected initialization label.

4, CSS hexadecimal color code abbreviation. Accustomed to the abbreviation and lowercase, this just know, originally not recommended writing, in order to reduce the resources used to resolve. But it also increases the volume of the file. Which is superior to the inferior, needs to be carefully examined.

5, the style puts on the head, the script puts at the foot. Not inline, only outside chain.

6, the resolute use of CSS expression.

7. Use a reference style sheet instead of @import import.

8, generally speaking, PNG is smaller than GIF, much smaller. Furthermore, how many colors in a GIF are wasted and worthy of optimization.

9, do not zoom in the HTML image, one not good-looking, both accounted for resources.

10, the text font best use even, 12px, 14px, 16px, the effect is very good. Special case, 15px.

11, block, UL, OL and so on to set aside at least one line spacing, left at least twice times the line spacing, right at random.

12. Between paragraphs, there should be at least one double spacing.

13, forced to specify some elements of the line-height, the body 1.6 times times the size of the text, the title 1.3 times times.

14, Chinese punctuation with full angle. English in Chinese, left and right spaces, half a corner.

15, Chinese font bold and italic, away from better, the benefit of self-interest.

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