.site-header {
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.site-header:not(.scrolled) {
color: var(--wp--preset--color--base);
}

.site-header.scrolled {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 9;
    transition: all 0.3s ease-in-out;
    -webkit-transition: all 0.3s ease-in-out;
    -moz-transition: all 0.3s ease-in-out;
    -o-transition: all 0.3s ease-in-out;
    -ms-transition: all 0.3s ease-in-out;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
    background-color: var(--wp--preset--color--primary);
    color:var(--wp--preset--color--base);
    top: -125px;
}

.site-header.site-header.scrolled.animated {
    top: 0;
}