#index #header.sticky {
  	position: sticky;
  	top: 0;
}

#index #header .header-top .logo {
  	width: 200px;
	height: 200px;
  	transition: width 1s, height 1s;
}

#index #header.sticky .header-top .logo {
	width: 5vh;
  	height: 5vh;
}