【CSS】Beginner2:Selectors, Properties, and Values

1.Whereas HTML has tags,CSS has selectors.

 

2.Selector{

properties:value;

properties2:value2;

}

 

3.Lengths & Percentages

px:unit for pixels

em:unit for the calculated size of a font;N times the current size

pt:unit for points ,printed media

%:

pc-picas,cm-centimeters,mm-millimeters,in-inches

zero value,no need to state a unit.