CSS
1. css is a cascading style sheet.
2. Use the benefits:
css more powerful; reducing the coupling lines of code.
3. Place Location:
Inline style: <div style = ""> </ div>
Internal Style: <style> selector {} </ style>
External style: divided into two chains of formula and introducing the formula
Links the formula: <link href = "" rel = "">
Introducing the formula: <style> @import url ( "path") </ style>
4. The writing specifications
<Style> {selector attribute names: Property Value; .........} </ style>
The three basic selector
Element selector
ID selector (#)
Class selector (.)
6.css style
Layout: float float
Format :
Selector {float: Property Value ;}
Common property values:
none : no floating element (default)
left : left floating element
right : the right floating elements
clear Clear float
Selector {clear: Property Value}
Attribute values: left, right, both (common) sides of the floating scavenging simultaneously the left and right
7.display (conversion)
Line level elements turn into block-level element; block element rows transfected level elements.
Selector {display: attribute value}
Common property values:
block: This element is displayed block elements
inline: This element is displayed inline elements.
none: This element is hidden, do not show, do not take up page space