Optimizing CSS in site optimization of SEO website in Xinjiang

Website optimization for my The most important site internal optimization, as long as the site to optimize the internal optimization, other SEO steps can play a multiplier effect. My will be in the back to write about the optimization of the method in the station, today, first of all to talk about SEO optimization-css optimization. Why say station optimization is the most important part of SEO. You seoer can think of Web site optimization is nothing but a few important links, and those links are required to continue to repeat every day to do things. Do not need to spend too much mental power, just want to do their own work as a laborer.

And station optimization is not the same, do not know that we have no experience, a few people at the same time to do the site, are updated original articles, but also internal links and external links, article optimization and so on are similar. But is it good or bad? In saying an example, some do Taobao customers such as rapid preemption rankings of the site, most willing to use the blog program to build stations. Not just the definition of the blog itself, (the blog article, can be explained as the blogger himself wrote, and the blogger himself wrote the definition of original article). The definition of this blog itself has a great effect on the past. But with the proliferation of blogs and the emergence of a large number of low-quality blogs, this is becoming less of a share. However, people will say that the use of the blog program is still more easily included than the site program. Indeed, this is because the internal structure of the blog program is friendlier to the search engine. The structure of the blog program will generally be relatively flat, content page away from the homepage is very close, more conducive to spiders crawl. Of course there are many ways. My listed this, just to make it clear that the site's internal optimization is very important. Webmasters do not think of hastily done the station, rely on what false original, garbage outside the chain and so to improve rankings. This is not only very tired, but also the effect is not good. You can take a look at these two articles, "The new webmaster needs to do preparation" and "streamlined code detailed." These two articles are all about the internal optimization of the site.

Well, to talk about CSS optimization, mainly about the efficiency of the implementation of CSS. After all, the efficiency of the site and SEO is also a big relationship. Before that, my needs to introduce the implementation of the CSS selector and the browser rendering process.

First, the browser is from right to left to handle the selector, then to say the browser work process, here is the process of rendering, after the data, the browser to draw a DOM tree, and then there is a "reflow" process, this process is in the CSS file download, Determine the position of the element to be rendered in the DOM, while many of the CSS styles have a "reflow" process to be applied, so avoiding this process, which reduces the process, will considerably improve the efficiency of the browser.

Another is the CSS selector priority problem, this is not much to say here. So my for example, just go to the code, for example, our usual selector would say:

. Main. pright Div a{color:red;

So according to the above, the browser's working process is to draw a good DOM tree, you will find all the a element of the page. After you find all the A elements, you start looking for the. Pright class under the. Main class to find Div, and finally find a tag, if there are a lot of a in this div a element will be a very resource-intensive thing. So what if there are more. XXX?

So we can write, in the div all the A element plus class= "XXX", the selector will write:

. Main. Pright div A. xxx{color:red;

This is a much more efficient way to write, and there are many examples of this. For example, a layer div nested too many styles may also be the case. In fact, many CMS and some of the front end of the experts have noticed the problem. Do not understand the people will be more depressed, why are the bottom of the also in each element to add class style?

Oh, compared to you should have some experience.