shorthand for colors in HTML

Five ways to color in 1.HTML

1) directly in the color of the English name expression

For example, the background color is white;

2. by 16 decimal notation

For example, the background color is black

3). By means of RGB

RGB: Is the first letter of the English alphabet in Red (red) green (blue) Three colors, with a value range of 0-255, with three parameter values

Indicates that the background color is yellow

Detailed values are shown in Figure 1

4). Expressed as a percentage

Three values are based on a percentage value of 255, and the effect is equal to Method 3

For example: Background-color:rgb (29%,50%,67%);

5). Use the Rgba () method to indicate

Writing methods and Methods 3, Method 4 is the same, the difference is that a is the color of the transparency, the value range is 0-1, 0 is completely transparent, 1 means completely opaque

For example: Background-color:rgba (211,213,12,0.4);

A simple overview of the writing specifications of 2.HTML

(1). All tag attributes must be written in English half-width and lowercase, otherwise the browser will not recognize

(2). Id,class name must begin with a letter, not with numbers and other symbols;

(3). All labels must be closed

Double label:

Single label: <br/>

shorthand for colors in HTML