In CSS, all font attributes are set with font. The following attributes are commonly used:
1. Font family : font-family ; can be followed by multiple values, but the values need to be separated by commas. When the computer does not have a font with the first value (such as Microsoft Yahei), the font with the second value will be selected , If there is no font with the second value, the third value will be selected.
2. Font size : font-size ; the attribute value is the pixel value, used to set the font size.
3. Font weight : font-weight ; set the thickness of the font, the attribute values are normal, bold, bolder, etc., the specific information can be found in the document.
4. Font style: font-style ; used to set the font style, such as slant,
Compound writing method of text attributes : Write various attributes of text together to save code.
font: 属性值1（style） 属性值2（weight） 属性值3（size）
属性值4（family）；
The compound writing method using font attributes must retain the size (size) and family (series) attributes, and the other two attributes can be omitted if they are not needed.