css| Web page
Because of the color of the Web page is wonderful, then how do we use CSS to deal with color?
CSS has 1677216 colors for you to dispose of, you can use the name, RGB (red-green-blue) value or hexadecimal code (hex) value to represent.
Reddish red
Identical to
RGB (255,0,0)
Identical to
RGB (100%,0%,0%)
Identical to
#ff0000
Identical to
#f00
There are 16 valid predefined color names. They are: Aqua (Water-green), Black (dark), Blue (blue), fuchsia (purple), gray (Gray), green (green), lime (light light), maroon (brown), Navy (dark blue), olive (olive), purple (purple), Red, silver (silver), teal (dark Cyan), White (Bai) and yellow (yellow).
Transparent transparent is also a legitimate value.
Of the three values of RGB from 0 to 255, 0 is the lowest order (if there is no red), and 255 is the highest order (e.g. all red). These values can also be percentages.
The hexadecimal hexadecimal (known as "Sexadecimal" and the more correct usage) is a 16-bit system. A decimal system is commonly used in our daily life (based on 10, from 0 to 9), but hexadecimal has 16 digits, from 0 to F.
Hexadecimal in CSS is defined with a half-width English number #, followed by 3 or 6 digits. Basically, 3-bit is a 6-bit compressed version (#f00就是 #ff0000, #c96就是 #cc9966, etc.). The 3-bit version is easier to interpret (the first number, like the first value of RGB, is red, the second green, needless to say, the third is blue), but the 6-bit version gives you more precise control over the color.
foreground and background colors
Colors can be used with color and background-color (note that this must be used in American English rather than in colour).
The following shows a CSS with text with a blue background and a yellow foreground:
H1 {
Color:yellow;
Background-color:blue;
}
These colors are a bit rough, so you can further refine the CSS code to make the text look cool:
Body {
Font-size:0.8em;
Color:navy;
}
H1 {
Color: #ffc;
Background-color: #009;
}
Save the CSS document, and then refresh the browser. You can see that the first level title (h1 element) has become a process color between yellow and blue.
You can apply color and Background-color attributes to most HTML elements, including the body, which can change the color of everything on the entire page.
