Developing commercial sites using HTML language and CSS (4)

Selector:

Tag Selector

p{
Background-color:purple;
}

Class Selector

. one{
color:red;
}

ID Selector

#a {
font-size:25px;
}

Inline style:

<p style= "Color:blue;" > </p>

Link an external style sheet with the address one.css.
<link rel= "stylesheet" type= "Text/css" href= "One.css"/>

Import the external style sheet with the address one.css.
<style>
@import url ("One.css");
</style>

Descendant selector:

OL li{
}

The set selector:

p,input,h1{
}

Common font properties (set font type, size, style, weight).
font-family font-size Font-style Font-weight

Common text properties (set text color, set element horizontal alignment, set indentation for first line of text, set the height of lines, set text decorations)
Color Text-align text-indent line-height text-decoration

Tag Selector: The xx label in the page is used. Style

Class Selector: Different tags can use the same class value

ID selector: must be unique ID number cannot be duplicated

Priority: ID Selector > class selector > tag Selector

Priority: Inline style > Inner style > External style

font-style:italic;/* Italic */
font-weight:bold;/* Bold */

text-align:center;/* Text Horizontal Center */

text-decoration:none;/* Not underlined */

text-decoration:underline;/* is underlined */

text-indent:20px;/* first Line indent 20 pixels */

Developing commercial sites using HTML language and CSS (4)