.nx-header{
    background:
        radial-gradient(
            circle at top center,
            rgba(18,58,111,.28) 0%,
            rgba(18,58,111,.12) 30%,
            transparent 70%
        ),
        rgba(18,18,18,.82);

    -webkit-backdrop-filter:blur(20px);
    backdrop-filter:blur(20px);

    border-bottom:1px solid rgba(255,255,255,.08);
}