#site-header {
    position: sticky;
    border-radius: 30px;
    border-bottom: none;
    transition:
        border-radius .3s ease,
        border-bottom .3s ease,
        box-shadow .3s ease;
}

#site-header.is-sticky {
    position: fixed;
    top: 0px;
    left: 0;
    right: 0;
    z-index: 1000;
    border-radius: 0 0 30px 30px;
    border-bottom: 3px solid var(--wp--preset--color--accent-1);
}

#site-header .logo img {
	transition: height .6s ease;
	height: 80px;
	width: auto;
}


#site-header.is-sticky .logo img {
	height: 60px;
}