section.roundimage{
		position:sticky;
		top:0;
		z-index:100;
			
		}

 .navimg{width:100px;height:50px}
	
  
  @media screen and (min-width:576px){
	
	section.roundimage{
		position:static;
		}
	
	.navimg{width:150px;height:80px}
	

  }