Some small points in HTML/CSS recently obtained (1)_html/css_WEB-ITnose

1. The 907fae80ddef53131f3292ee4f81644b and 8e99a69fbe029cd4e2b854e244eab143 tags are used to emphasize certain words in a paragraph. 907fae80ddef53131f3292ee4f81644bItalic by default, 8e99a69fbe029cd4e2b854e244eab143Bold by default. In emphatic tone, 8e99a69fbe029cd4e2b854e244eab143 expresses stronger emphasis than 907fae80ddef53131f3292ee4f81644b. At present, domestic front-end programmers prefer to use 8e99a69fbe029cd4e2b854e244eab143 to express emphasis.

2. The browser will automatically add double quotes to the short text reference tag 1244aa79a84dea840d8e55c52dc97869.

3. The browser parses the long text quotation tag 86418835f6a5021dc9ffbed4da1da974 in an indented style (both sides of the quotation paragraph are indented).

4. When inserting a line of code into a web page, you can use the ffbe95d20f3893062224282accb13e8f tag. If you want to insert multiple lines of code, use the e03b848252eb9375d56be284e690e873 tag.

5. The 3499910bf9dac5ae3c52d5ede7383485 tag can be used to send emails conveniently using mailto. The details are as follows:

6. All form controls (text boxes, text fields, buttons, radio boxes, check boxes, etc.) must be placed in 80e4a4b497ba87d4db7bd7777678eee0f5a47148e367a6035fd7a2faa965022e tags (otherwise the information entered by the user may not be submitted to the server).

7. The name values ​​of radio buttons in the same group must be consistent, so that they can play the role of radio selection.

8. The drop-down list can also perform multiple selection operations. Set the multiple="multiple" attribute in the 221f08282418e2996498697df914ce4e tag to achieve the multiple selection function. Under the Widows operating system , when making multiple selections, press the Ctrl key and click simultaneously (use Command click under Mac) to select multiple options.

9. There is a button called the "Reset" button:

<input type = "reset" value = "重置">

10. Sub-selector (>) only acts on the first generation descendants of the element, and the descendant selector (space) acts on all descendant elements.

11. Currently, the "pseudo-class selector" a:hover is compatible with all browsers (in fact, there are many pseudo-class selectors, especially in CSS3, but it is not compatible with all browsers) device). In fact, :hover can be placed on any tag, such as p:hover, but their compatibility is also very poor, so the combination of a:hover is more commonly used now.

12. Letter-spacing can set text spacing or letter spacing in web page layout.