CSS style Additions

CSS some common Properties *******0. Remove the underscore: text-decoration:none; 1. Underline: Text-decoration:underline;2. Adjusts the position of the text and picture (that is, the vertical alignment of the element): vertical-align:-20px;3. Margin: margin4. padding: padding5. Center; margin 0 auto; (centered on box only)　　6 inline tags are not to be set to long-width, and sometimes you have to turn inline tags into block-level labels or block-level inline tags, which uses the display label.　　1. Convert the inline tag to block-level tags: display:block;　　2. Convert block-level labels to inline tags: display:inline;　　　3. Block-level inline tag: display;inline-block; Block-level inline labels can be as long-width as block-level, or 6 on a single line as inline. Hidden two methods: Display:none; #隐藏了会顶上去 Visibility:hidden;　　　　　　　　　　　#隐藏了不会顶上去7. Two ways to hide overflow: overflow:auto;  Overflow:scoll;   #带滚动条8. Text horizontally centered: Text-align:center; 　　Text is centered vertically: line-height;9. Pseudo class; 1. Before Access: a:link{color:red;}　　2. Mouse hover: a:hover{color:green;}　　3. After the visit: A:visited{color:yellow;}　　4. Mouse click A:active{color:blue;}　　　　5. In the P Tag property, add the content of C2 to the following p.c2:after{: ' Hello ';　　color:red;　　　　}6. In the P tag attribute for C2 's money face plus content p.c2:before{contents: ' La la la ';　　color:red; }10.position Four attributes 1.static: Default position 2.fixed: Completely out of the document flow, fixed positioning (with Visual window as a reference) 3.relative: relative positioning (referring to their own position), not out of the document flow, no top up, Will keep his position motionless. You can use top left for positioning 4.absolute: Absolute positioning: Out of the document flow (referring to the parent that has been locatedLabel positioning, if not found to the body to find) attention!! : Set the positioning label to Absolute, set his parent label to the difference between the positioning label (relative) 11.float and position float: semi-detached document flow position: All out of document flow 12.z-index property sets the stacking order of elements. Elements that have a higher stacking order are always in front of elements that are lower in stacking order. 13. Transparency: opacity:0.4;14. Border Radian: border-radius:50%; #圆15. Remove the flag in front of the list: list-style:none;16. Align top and left topmost: padding:0; Margin:0;17. Font bold style: font-weight:900; 18. There are several logical expressions to be aware of the problem, below this and JS &&,| | The usage is the same as print (3 and 5) #两个为真才为真 print (0 and 3) #0是假就不判断后面了, directly into fake print (0 or 3) #有一个为真就为真 print (2 or 3) #2已经为真了那么就不会去判断后 Face.

CSS style Additions