#nav-bg {
    position: absolute;
    width: 390px;
    height: 426px;
    right: -135px;
    top: 72px;

    background: linear-gradient(75.93deg, #C372FD 36.19%, #8A93EF 53.22%, #557EE5 76.7%);
    filter: blur(118px);
}