.sprites-nav {
color: red;
}
.sprites-nav_up {
color: green;
}
.mw_nav_button {
float: right;
width: 30px;
height: 30px;
margin: 10px 10px 10px 0;
overflow: hidden;
&[data-ur-state="disabled"] {
@extend .sprites-nav;
}
&[data-ur-state="enabled"] {
@extend .sprites-nav_up;
}
}