Questions about the mobile version of the website_html/css_WEB-ITnose

Hello everyone, the website is ready. The PC version is pretty good, but the effect on the mobile phone is very poor. I want to make a mobile version.
I checked some information, and some information shows that wml should be used to write wap websites. But now all major portals have mobile versions, and there are various versions, flash version, color version, 3G version, simplified version, touch version...it makes my head big. I tried to use my computer to access some mobile websites (here are some, NetEase: http://wap.163.com/, http://3g.163.com/x/; Sohu: http://wap.sohu. com/; Sina: http://3g.sina.com.cn/?vt=4&pos=101; Zhongguancun: http://3g.zol.com.cn/). Then when I intercepted the source code, I found that it was all written in HTML, and the page attribute was "text/html".
I really don’t understand, so please give me some advice:
①What are these websites written in? More broadly, how was it developed?
②For example, I gave the example of NetEase above: http://wap.163.com/ http://3g.163.com/x/. These two websites are accessed from mobile phones. What do they have? What's the difference?

Reply to discussion (solution)

I am also studying this aspect, http://www.iteye.com/topic/1120915, You can take a look at this. If you have any knowledge, share it with everyone.

I am also studying this aspect, http://www.iteye.com/topic/1120915, you can take a look at this. If you have any knowledge, share it with everyone. Thanks.

Now it is written directly in HTML, and even copycat phones can support it. See duudoo.com

itmobi.net--Mobile CSDN