div{
    width: 320px;
    height: 200px;
    border: 1px solid #333;
    margin: 10px auto;
    background-color : RGBa(255, 255, 0, 0.2);
}

#ex1, #ex2, #ex3{
    background-image: 
	url("../images/smilesmall.jpg");
	
}
#ex1{
    background-repeat: no-repeat;
}
#ex2{
    background-repeat: round no-repeat;
}
#ex3{
    background-repeat: space no-repeat;
}
#ex4{
    background-image: 
	url("../images/smilesmall.jpg"), 
	url("../images/thinksmall.jpg");
    background-repeat: repeat-x, repeat-y; 
	/*repeat no-repeat, no-repeat repeat*/
}