.group-header{position:fixed;top:0;left:0;width:100%;background:#fff;z-index:9999;box-shadow:0 2px 4px #0000001a;transition:padding .3s ease,box-shadow .3s ease;padding:1px}
.group-header.shrink{padding:.1px 0;box-shadow:0 1px 3px #00000014}
.group-header > .header-group{max-width:850px;margin:0 auto;padding:0}
.group-header.is-layout-wide > .header-group{max-width:1200px}
body{padding-top:100px}