zx_bms_uni/miniprogram_npm/@vant/weapp/overlay/index.css

@import '../common/index.css';
.van-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    background-color: var(--overlay-background-color, rgba(0, 0, 0, 0.7));
}