Tips on front-end web page layout:
(Video tutorial recommendation: css video tutorial)
1. The ul tag is in Mozilla has a padding value by default, but in IE only margin has a value.
2. The same class selector can appear repeatedly in a document, but the id selector can only appear once; use both class and id for a label in CSS definition. If the definition is repeated, the id The definition of the selector is valid because the weight of ID is greater than CLASS.
3. A stupid way to adjust compatibility (IE and Mozilla):
Beginners may encounter such a situation: it is normal for the same label attribute to be displayed in IE when it is set to A , and in Mozilla it must be set to B to display normally, or the two are reversed.
Temporary solution:
选择符{属性名:B !important;属性名:A}4. If there is some spacing between a group of tags to be nested, leave it to the margin attribute of the tag inside instead of defining it. The padding
5 of the outer label and the icon in front of the li label are recommended to use background-image instead of list-style-image.
6. IE cannot distinguish the difference between inheritance relationship and parent-child relationship. They are all inheritance relationships.
7. When adding selectors to your tags, don’t forget to add comments to the selectors in CSS. You'll know why you do this when you modify your CSS later.
8. If you set a dark background image and bright text effect for a label. It is recommended to set a darker background color for your label at this time.
9. Pay attention to the order of defining the four states of the link:
Link Visited Hover Active
10. Please use background for pictures that have nothing to do with the content
11. The definition color can be abbreviated #8899FF =#89F
12. Table performs much better than other tags in some aspects. Please use it where column alignment is required.
13.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
