把背景恢复成NS样式

@media only screen and (min-width: 500px) {
    .bg1 {
        background-image: linear-gradient(#d4d4d4 1px, transparent 0), linear-gradient(90deg, #d4d4d4 1px, transparent 0);
        background-size: 32px 32px;
    }
}
@media only screen and (min-width: 500px) {
    .dark-layout.bg1 {
        background-image: linear-gradient(var(--fade-color) 1px, transparent 1px), linear-gradient(to right, var(--fade-color) 1px, transparent 1px);
        background-size: 32px 32px;
    }
}