css20 CSS Text 文本，文字

https://www.w3schools.com/css/css_text.asp

CSS has a lot of properties for formatting text.

 

<!DOCTYPE html>
<html>
<head>
<style>
div {
  border: 1px solid gray;
  padding: 8px;
}

h1 {
  text-align: center;
  text-transform: uppercase;
  color: #4CAF50;
}

p {
  text-indent: 50px;
  text-align: justify;
  letter-spacing: 3px;
}

a {
  text-decoration: none;
  color: #008CBA;
}
</style>
</head>
<body>

<div>
  <h1>text formatting</h1>
  <p>This text is styled with some of the text formatting properties. The heading uses the text-align, text-transform, and color properties.
  The paragraph is indented, aligned, and the space between characters is specified. The underline is removed from this colored
  <a target="_blank" href="tryit.asp?filename=trycss_text">"Try it Yourself"</a> link.</p>
</div>

</body>
</html>

 

Text Color

The color property is used to set the color of the text. The color is specified by:

  • a color name - like "red"
  • a HEX value - like "#ff0000"
  • an RGB value - like "rgb(255,0,0)"

Look at CSS Color Values for a complete list of possible color values.

The default text color for a page is defined in the body selector.

Example

body {
  color: blue;
}

h1 {
  color: green;
} 
<!DOCTYPE html>
<html>
<head>
<style>
body {
  color: blue;
}

h1 {
  color: green;
}
</style>
</head>
<body>

<h1>This is heading 1</h1>
<p>This is an ordinary paragraph. Notice that this text is blue. The default text color for a page is defined in the body selector.</p>
<p>Another paragraph.</p>

</body>
</html>

 

 

Text Color and Background Color

In this example, we define both the background-color property and the color property:

Example

body {
  background-color: lightgrey;
  color: blue;
}

h1 {
  background-color: black;
  color: white;
}

div {
  background-color: blue;
  color: white;
} 
<!DOCTYPE html>
<html>
<head>
<style>
body {
  background-color: lightgrey;
  color: blue;
}

h1 {
  background-color: black;
  color: white;
}

div {
  background-color: blue;
  color: white;
}
</style>
</head>
<body>

<h1>This is a Heading</h1>
<p>This page has a grey background color and a blue text.</p>
<div>This is a div.</div>

</body>
</html>

 

 

Important: High contrast is very important for people with vision problems. So, always ensure that the contrast between the text color and the background color (or background image) is good!

The CSS Text Color Property

PropertyDescription
color Specifies the color of text

 

 

https://www.w3schools.com/css/css_text_align.asp

Text Alignment and Text Direction

In this chapter you will learn about the following properties:

  • text-align
  • text-align-last
  • direction
  • unicode-bidi
  • vertical-align

Text Alignment

The text-align property is used to set the horizontal alignment of a text.

A text can be left or right aligned, centered, or justified.

The following example shows center aligned, and left and right aligned text (left alignment is default if text direction is left-to-right, and right alignment is default if text direction is right-to-left):

Example

h1 {
  text-align: center;
}

h2 {
  text-align: left;
}

h3 {
  text-align: right;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-align: center;
}

h2 {
  text-align: left;
}

h3 {
  text-align: right;
}
</style>
</head>
<body>

<h1>Heading 1 (center)</h1>
<h2>Heading 2 (left)</h2>
<h3>Heading 3 (right)</h3>

<p>The three headings above are aligned center, left and right.</p>

</body>
</html>

 

When the text-align property is set to "justify", each line is stretched so that every line has equal width, and the left and right margins are straight (like in magazines and newspapers):

Example

div {
  text-align: justify;
} 
<!DOCTYPE html>
<html>
<head>
<style>
div {
  border: 1px solid black;
  padding: 10px;
  width: 200px;
  height: 200px;
  text-align: justify;
}
</style>
</head>
<body>

<h1>Example text-align: justify</h1>

<p>The text-align: justify; value stretches the lines so that each line has equal width (like in newspapers and magazines).</p>

<div>
In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since. 'Whenever you feel like criticizing anyone,' he told me, 'just remember that all the people in this world haven't had the advantages that you've had.'
</div>

</body>
</html>

 

 

Text Align Last

The text-align-last property specifies how to align the last line of a text.

Example

Align the last line of text in three <p> elements:

p.a {
  text-align-last: right;
}

p.b {
  text-align-last: center;
}

p.c {
  text-align-last: justify;
} 
<!DOCTYPE html>
<html>
<head>
<style>
p.a {
  text-align-last: right;
}

p.b {
  text-align-last: center;
}

p.c {
  text-align-last: justify;
}
</style>
</head>
<body>

<h1>The text-align-last Property</h1>

<h2>text-align-last: right:</h2>
<p class="a">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam semper diam at erat pulvinar, at pulvinar felis blandit. Vestibulum volutpat tellus diam, consequat gravida libero rhoncus ut.</p>

<h2>text-align-last: center:</h2>
<p class="b">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam semper diam at erat pulvinar, at pulvinar felis blandit. Vestibulum volutpat tellus diam, consequat gravida libero rhoncus ut.</p>

<h2>text-align-last: justify:</h2>
<p class="c">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Etiam semper diam at erat pulvinar, at pulvinar felis blandit. Vestibulum volutpat tellus diam, consequat gravida libero rhoncus ut.</p>

</body>
</html>

 

Text Direction

The direction and unicode-bidi properties can be used to change the text direction of an element:

Example

p {
  direction: rtl;
  unicode-bidi: bidi-override;
} 
<!DOCTYPE html>
<html>
<head>
<style>
p.ex1 {
  direction: rtl;
  unicode-bidi: bidi-override;
}
</style>
</head>
<body>

<p>This is the default text direction.</p>

<p class="ex1">This is right-to-left text direction.</p>

</body>
</html>

 

Vertical Alignment

The vertical-align property sets the vertical alignment of an element.

 

 

 

Example

Set the vertical alignment of an image in a text: 

img.a {
  vertical-align: baseline;
}

img.b {
  vertical-align: text-top;
}

img.c {
  vertical-align: text-bottom;
}

img.d {
  vertical-align: sub;
}

img.e {
  vertical-align: super;
} 
<!DOCTYPE html>
<html>
<head>
<style>
img.a {
  vertical-align: baseline;
}

img.b {
  vertical-align: text-top;
}

img.c {
  vertical-align: text-bottom;
}

img.d {
  vertical-align: sub;
}

img.e {
  vertical-align: super;
}
</style>
</head>
<body>

<h1>The vertical-align Property</h1>

<h2>vertical-align: baseline (default):</h2>
<p>An <img class="a" src="sqpurple.gif" width="9" height="9"> image with a default alignment.</p> 

<h2>vertical-align: text-top:</h2>
<p>An <img class="b" src="sqpurple.gif" width="9" height="9"> image with a text-top alignment.</p> 

<h2>vertical-align: text-bottom:</h2>
<p>An <img class="c" src="sqpurple.gif" width="9" height="9"> image with a text-bottom alignment.</p>

<h2>vertical-align: sub:</h2>
<p>An <img class="d" src="sqpurple.gif" width="9" height="9"> image with a sub alignment.</p> 

<h2>vertical-align: sup:</h2>
<p>An <img class="e" src="sqpurple.gif" width="9" height="9"> image with a super alignment.</p>

</body>
</html>

 

 

The CSS Text Alignment/Direction Properties

PropertyDescription
direction Specifies the text direction/writing direction
text-align Specifies the horizontal alignment of text
text-align-last Specifies how to align the last line of a text
unicode-bidi Used together with the direction property to set or return whether the text should be overridden to support multiple languages in the same document
vertical-align Sets the vertical alignment of an element

 

 

https://www.w3schools.com/css/css_text_decoration.asp

CSS Text Decoration

Text Decoration

In this chapter you will learn about the following properties:

  • text-decoration-line
  • text-decoration-color
  • text-decoration-style
  • text-decoration-thickness
  • text-decoration

Add a Decoration Line to Text

The text-decoration-line property is used to add a decoration line to text.

Tip: You can combine more than one value, like overline and underline to display lines both over and under a text.

Example

h1 {
  text-decoration-line: overline;
}

h2 {
  text-decoration-line: line-through;
}

h3 {
  text-decoration-line: underline;
}

p {
  text-decoration-line: overline underline;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-decoration: overline;
}

h2 {
  text-decoration: line-through;
}

h3 {
  text-decoration: underline;
}

p.ex {
  text-decoration: overline underline;
}
</style>
</head>
<body>

<h1>Overline text decoration</h1>
<h2>Line-through text decoration</h2>
<h3>Underline text decoration</h3>
<p class="ex">Overline and underline text decoration.</p>

<p><strong>Note:</strong> It is not recommended to underline text that is not a link, as this often confuses 
the reader.</p>

</body>
</html>

 

 

Note: It is not recommended to underline text that is not a link, as this often confuses the reader.

Specify a Color for the Decoration Line

The text-decoration-color property is used to set the color of the decoration line.

Example

h1 {
  text-decoration-line: overline;
  text-decoration-color: red;
}

h2 {
  text-decoration-line: line-through;
  text-decoration-color: blue;
}

h3 {
  text-decoration-line: underline;
  text-decoration-color: green;
}

p {
  text-decoration-line: overline underline;
  text-decoration-color: purple;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-decoration-line: overline;
  text-decoration-color: red;
}

h2 {
  text-decoration-line: line-through;
  text-decoration-color: blue;
}

h3 {
  text-decoration-line: underline;
  text-decoration-color: green;  
}

p {
  text-decoration-line: overline underline;
  text-decoration-color: purple;  
}
</style>
</head>
<body>

<h1>Overline text decoration</h1>
<h2>Line-through text decoration</h2>
<h3>Underline text decoration</h3>
<p>Overline and underline text decoration.</p>

</body>
</html>

 

 

Specify a Style for the Decoration Line

The text-decoration-style property is used to set the style of the decoration line.

Example

h1 {
  text-decoration-line: underline;
  text-decoration-style: solid;
}

h2 {
  text-decoration-line: underline;
  text-decoration-style: double;
}

h3 {
  text-decoration-line: underline;
  text-decoration-style: dotted;
}

p.ex1 {
  text-decoration-line: underline;
  text-decoration-style: dashed;
}

p.ex2 {
  text-decoration-line: underline;
  text-decoration-style: wavy;
}

p.ex3 {
  text-decoration-line: underline;
  text-decoration-color: red;
  text-decoration-style: wavy;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-decoration-line: underline;
  text-decoration-style: solid; /* this is default */
}

h2 {
  text-decoration-line: underline;
  text-decoration-style: double;
}

h3 {
  text-decoration-line: underline;
  text-decoration-style: dotted;  
}

p.ex1 {
  text-decoration-line: underline;
  text-decoration-style: dashed;  
}

p.ex2 {
  text-decoration-line: underline;
  text-decoration-style: wavy;  
}

p.ex3 {
  text-decoration-line: underline;
  text-decoration-color: red;  
  text-decoration-style: wavy;  
}
</style>
</head>
<body>

<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<p class="ex1">A paragraph.</p>
<p class="ex2">Another paragraph.</p>
<p class="ex3">Another paragraph.</p>

</body>
</html>

 

 

 

Specify the Thickness for the Decoration Line

The text-decoration-thickness property is used to set the thickness of the decoration line.

Example

h1 {
  text-decoration-line: underline;
  text-decoration-thickness: auto;
}

h2 {
  text-decoration-line: underline;
  text-decoration-thickness: 5px;
}

h3 {
  text-decoration-line: underline;
  text-decoration-thickness: 25%;
}

p {
  text-decoration-line: underline;
  text-decoration-color: red;
  text-decoration-style: double;
  text-decoration-thickness: 5px;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-decoration-line: underline;
  text-decoration-thickness: auto;  /* this is default */
}

h2 {
  text-decoration-line: underline;
  text-decoration-thickness: 5px;
}

h3 {
  text-decoration-line: underline;
  text-decoration-thickness: 25%;
}

p {
  text-decoration-line: underline;
  text-decoration-color: red;  
  text-decoration-style: double;
  text-decoration-thickness: 5px;  
}
</style>
</head>
<body>

<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<p>A paragraph.</p>

</body>
</html>

 

 

The Shorthand Property

The text-decoration property is a shorthand property for:

  • text-decoration-line (required)
  • text-decoration-color (optional)
  • text-decoration-style (optional)
  • text-decoration-thickness (optional)

Example

h1 {
  text-decoration: underline;
}

h2 {
  text-decoration: underline red;
}

h3 {
  text-decoration: underline red double;
}

p {
  text-decoration: underline red double 5px;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-decoration: underline;
}

h2 {
  text-decoration: underline red;
}

h3 {
  text-decoration: underline red double;
}

p {
  text-decoration: underline red double 5px;
}
</style>
</head>
<body>

<h1>Heading 1</h1>
<h2>Heading 2</h2>
<h3>Heading 3</h3>
<p>A paragraph.</p>

</body>
</html>

 

 

A Small Tip

All links in HTML are underlined by default. Sometimes you see that links are styled with no underline. The text-decoration: none; is used to remove the underline from links, like this:

Example

a {
  text-decoration: none;
} 
<!DOCTYPE html>
<html>
<head>
<style>
a {
  text-decoration: none;
}
</style>
</head>
<body>

<h1>Using text-decoration: none</h1>

<p>A link with no underline: <a href="https://www.w3schools.com">W3Schools.com</a></p>

</body>
</html>

 

 

All CSS text-decoration Properties

PropertyDescription
text-decoration Sets all the text-decoration properties in one declaration
text-decoration-color Specifies the color of the text-decoration
text-decoration-line Specifies the kind of text decoration to be used (underline, overline, etc.)
text-decoration-style Specifies the style of the text decoration (solid, dotted, etc.)
text-decoration-thickness Specifies the thickness of the text decoration line

 

 

 https://www.w3schools.com/css/css_text_transformation.asp

CSS Text Transformation

Text Transformation

The text-transform property is used to specify uppercase and lowercase letters in a text.

It can be used to turn everything into uppercase or lowercase letters, or capitalize the first letter of each word:

Example

p.uppercase {
  text-transform: uppercase;
}

p.lowercase {
  text-transform: lowercase;
}

p.capitalize {
  text-transform: capitalize;
} 
<!DOCTYPE html>
<html>
<head>
<style>
p.uppercase {
  text-transform: uppercase;
}

p.lowercase {
  text-transform: lowercase;
}

p.capitalize {
  text-transform: capitalize;
}
</style>
</head>
<body>

<h1>Using the text-transform property</h1>

<p class="uppercase">This text is transformed to uppercase.</p>
<p class="lowercase">This text is transformed to lowercase.</p>
<p class="capitalize">This text is capitalized.</p>

</body>
</html>

 

 

The CSS Text Transformation Property

PropertyDescription
text-transform Controls the capitalization of text

 

 https://www.w3schools.com/css/css_text_spacing.asp

CSS Text Spacing

Text Spacing

In this chapter you will learn about the following properties:

  • text-indent
  • letter-spacing
  • line-height
  • word-spacing
  • white-space

Text Indentation

The text-indent property is used to specify the indentation of the first line of a text:

Example

p {
  text-indent: 50px;
} 
<!DOCTYPE html>
<html>
<head>
<style>
p {
  text-indent: 50px;
}
</style>
</head>
<body>

<h1>Using text-indent</h1>

<p>In my younger and more vulnerable years my father gave me some advice that I've been turning over in my mind ever since. 'Whenever you feel like criticizing anyone,' he told me, 'just remember that all the people in this world haven't had the advantages that you've had.'</p>

</body>
</html>

 

Letter Spacing

The letter-spacing property is used to specify the space between the characters in a text.

The following example demonstrates how to increase or decrease the space between characters:

Example

h1 {
  letter-spacing: 5px;
}

h2 {
  letter-spacing: -2px;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h2 {
  letter-spacing: 5px;
}

h3 {
  letter-spacing: -2px;
}
</style>
</head>
<body>

<h1>Using letter-spacing</h1>

<h2>This is heading 1</h2>
<h3>This is heading 2</h3>

</body>
</html>

 

 

Line Height

The line-height property is used to specify the space between lines:

Example

p.small {
  line-height: 0.8;
}

p.big {
  line-height: 1.8;
} 
<!DOCTYPE html>
<html>
<head>
<style>
p.small {
  line-height: 0.7;
}

p.big {
  line-height: 1.8;
}
</style>
</head>
<body>

<h1>Using line-height</h1>

<p>
This is a paragraph with a standard line-height.<br>
The default line height in most browsers is about 110% to 120%.<br>
</p>

<p class="small">
This is a paragraph with a smaller line-height.<br>
This is a paragraph with a smaller line-height.<br>
</p>

<p class="big">
This is a paragraph with a bigger line-height.<br>
This is a paragraph with a bigger line-height.<br>
</p>

</body>
</html>

 

 

 

Word Spacing

The word-spacing property is used to specify the space between the words in a text.

The following example demonstrates how to increase or decrease the space between words:

Example

p.one {
  word-spacing: 10px;
}

p.two {
  word-spacing: -2px;
}
 
<!DOCTYPE html>
<html>
<head>
<style>
p.one {
  word-spacing: 10px;
}

p.two {
  word-spacing: -2px;
}
</style>
</head>
<body>

<h1>Using word-spacing</h1>

<p>This is a paragraph with normal word spacing.</p>

<p class="one">This is a paragraph with larger word spacing.</p>

<p class="two">This is a paragraph with smaller word spacing.</p>

</body>
</html>

 

 

White Space

The white-space property specifies how white-space inside an element is handled.

This example demonstrates how to disable text wrapping inside an element:

Example

p {
  white-space: nowrap;
} 
<!DOCTYPE html>
<html>
<head>
<style>
p {
  white-space: nowrap;
}
</style>
</head>
<body>

<h1>Using white-space</h1>

<p>
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
This is some text that will not wrap.
</p>

<p>Try to remove the white-space property to see the difference!</p>

</body>
</html>

 


 

The CSS Text Spacing Properties

PropertyDescription
letter-spacing Specifies the space between characters in a text
line-height Specifies the line height
text-indent Specifies the indentation of the first line in a text-block
white-space Specifies how to handle white-space inside an element
word-spacing Specifies the space between words in a text

 

 

https://www.w3schools.com/css/css_text_shadow.asp

CSS Text Shadow

Text Shadow

The text-shadow property adds shadow to text.

In its simplest use, you only specify the horizontal shadow (2px) and the vertical shadow (2px):

 

Example

h1 {
  text-shadow: 2px 2px;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-shadow: 2px 2px;
}
</style>
</head>
<body>

<h1>Text-shadow effect!</h1>

</body>
</html>

 

Next, add a color (red) to the shadow:

 

Example

h1 {
  text-shadow: 2px 2px red;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-shadow: 2px 2px red;
}
</style>
</head>
<body>

<h1>Text-shadow effect!</h1>

</body>
</html>

 

Then, add a blur effect (5px) to the shadow:

 

Example

h1 {
  text-shadow: 2px 2px 5px red;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-shadow: 2px 2px 5px red;
}
</style>
</head>
<body>

<h1>Text-shadow effect!</h1>

</body>
</html>

 

 

More Text Shadow Examples

Example 1

Text-shadow on a white text:

h1 {
  color: white;
  text-shadow: 2px 2px 4px #000000;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  color: white;
  text-shadow: 2px 2px 4px #000000;
}
</style>
</head>
<body>

<h1>Text-shadow effect!</h1>

</body>
</html>

 

Example 2

Text-shadow with red neon glow:

h1 {
  text-shadow: 0 0 3px #ff0000;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-shadow: 0 0 3px #FF0000;
}
</style>
</head>
<body>

<h1>Text-shadow with red neon glow!</h1>

</body>
</html>

 

Example 3

Text-shadow with red and blue neon glow:

h1 {
  text-shadow: 0 0 3px #ff0000, 0 0 5px #0000ff;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  text-shadow: 0 0 3px #FF0000, 0 0 5px #0000FF;
}
</style>
</head>
<body>

<h1>Text-shadow with red and blue neon glow!</h1>

</body>
</html>

 

Example 4

h1 {
  color: white;
  text-shadow: 1px 1px 2px black, 0 0 25px blue, 0 0 5px darkblue;
} 
<!DOCTYPE html>
<html>
<head>
<style>
h1 {
  color: white;
  text-shadow: 1px 1px 2px black, 0 0 25px blue, 0 0 5px darkblue;
}
</style>
</head>
<body>

<h1>Text-shadow effect!</h1>

</body>
</html>

 

The CSS Text Shadow Property

PropertyDescription
text-shadow Specifies the shadow effect added to text
posted @ 2024-05-30 08:43  emanlee  阅读(6)  评论(0)  编辑  收藏  举报