html - Apply CSS to an element that belongs to two classes but not those two classes individually -

is possible: have div belongs 2 classes , want add more config div dont want parent classes individually have properties. e.g.

div-one

<div class="classa classb">some text</div> 

div-two

<div class="classa"></div> 

div-three

<div class="classb"></div> 

now in css file:

.classa{ height:100%, width:100% } classb{ text-align:center, etc:etc } 

now how apply additional config div-one without adding config options classes & b , cannot use id property because div gets created dynamically. want functionality

.classa .classb{ //additional config } 

but dont want additional config applied div-two , div-three

if i'm understanding question correctly, want style div has both classa , classb correct? if so, here how that:

.classa.classb { //additional config } 

note how there no space between 2 classes. means styles set applied elements have both classa , classb

here fiddle showing off: http://jsfiddle.net/nbj2j/