YouTip

```html # CSS3 :empty Selector | Rookie Tutorial # [Rookie Tutorial -- Learn not only technology, but also dreams!]( * ( * ( * ( * ( * (javascript:void(0);) * (httpextremewww./react/react-tutorial.html) * ( * (http://www.runextremeob.com/java/java-tutorial.html) * ( * [C++]( * [C#]( * (javascript:void(0);) * ( * ( * ( * ( * (javascript:void(0);) * ( * ( * ( * ( extreme ( * ( * ( * (javascript:void(0)) * ( * ( * ( * ( * ( * ( * ( * ( * ( * ( * ( * ( * ( CSS Reference Manual ( "CSS Reference Manual")( "CSS Selectors")( "CSS Aural Reference Manual")( "CSS Web Safe Fonts")( "CSS Animations")( "CSS Functions")( "CSS Units")(extreme://www./cssref/css-colors.html "CSS Colors")( "CSS Legal Color Values")( "CSS Color Names")( "CSS Color Hex Values")( "CSS Browser Support")( ## CSS Properties ( "CSS3 appearance property")( "CSS3 backface-visibility property")( "CSS background property")( "CSS background-attachment property")( "CSS background-color property")( "CSS background-image property")( "CSS background-position property")( "CSS background-repeat property")( "CSS3 background-size property")( "CSS border property")( "CSS border-bottom property")( "CSS border-bottom-color property")( "CSS border-bottom-style property")[border- ```