@charset "utf-8";
.class_image_30x30 {
width: 30px;
height: 30px;
;

background-image: url("image_30x30.png");
  
}

.class_image_50x50 {
height:50px;
background-image: url("image_50x50.png");
}

#id_image_30x30
{
width: 30px;
height: 30px;
background-image: url("image_30x30.png");
}

#id_image_50x50
{
width: 50px;
height: 50px;
background-image: url("image_50x50.png");
}