<s>
HTML <s> Tag
The <s> tag is used to define a text, which is not relevant anymore. Browsers display the tag content as a strikethrough text.
For example, the tag can be used to show the new price of a product, still displaying its original price but with a line through the middle. （例如，标签可用于显示产品的新价格，仍然显示其原始价格，但中间有一条线。）
Don’t use the <s> tag to define a deleted text because it is a deprecated HTML tag, use the <del> tag instead.
Most screen reading technology doesn’t announce the existence of the <s> tag in the default configuration. To announce it, use the CSS content property with the ::after and ::before pseudo-elements.
Syntax
Syntax （语法）
The <s> tag comes in pairs. The content is written between the opening (<s>) and closing (</s>) tags.
Example of the HTML <s> tag:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<p><s>I am studying in high school.</s></p>
<p>I am studying in an university.</p>
</body>
</html>
Result
Attributes
Attributes （属性）
The <s> tag supports Global attributes and the Event Attributes.
How to style <s> tag? Common properties to alter the visual weight/emphasis/size of text in <s> tag:
CSS font-style property sets the style of the font. normal | italic | oblique | initial | inherit. CSS font-family property specifies a prioritized list of one or more font family names and/or generic family names for the selected element. CSS font-size property sets the size of the font. CSS font-weight property defines whether the font should be bold or thick. CSS text-transform property controls text case and capitalization. CSS text-decoration property specifies the decoration added to text, and is a shorthand property for text-decoration-line, text-decoration-color, text-decoration-style.
Coloring text in <s> tag:
CSS color property describes the color of the text content and text decorations. CSS background-color property sets the background color of an element.
Text layout styles for <s> tag:
CSS text-indent property specifies the indentation of the first line in a text block. CSS text-overflow property specifies how overflowed content that is not displayed should be signalled to the user. CSS white-space property specifies how white-space inside an element is handled. CSS word-break property specifies where the lines should be broken.
Other properties worth looking at for <s> tag:
CSS text-shadow property adds shadow to text. CSS text-align-last property sets the alignment of the last line of the text. CSS line-height property specifies the height of a line. CSS letter-spacing property defines the spaces between letters/characters in a text. CSS word-spacing property sets the spacing between words.