@media only  screen and (max-width: 640px) {
.scrollup{
    bottom: 50px;
    right: 20px;
}
}

@media only screen and (min-width: 641px) and (max-width: 980px) {
.scrollup{
    bottom: 50px;
    right: 20px;
}
}

  
@media only  screen and (min-width: 981px)  {
	
	 
 
}