CSS3
Microsoft YaHei font settings-font-family:'Mcrosoft YaHei';
Selector————Textbook p227
Remove the underline from the link————Textbook p271
Conversion of inline elements and block-level elements-textbook p306
The single line of text is vertically centered-make the line height of the text equal to the height of the box, that is, height=line-height
Remove the small dots in the unordered list——list-style: none