page {
    background: #fff;
}
.hall_head {
    position: fixed;
    top: 0;
    width: 100%;
    left: 0;
    right: 0;
    background: #ffd23c;
    box-sizing: border-box;
}
.van-dropdown-menu {
    background-color: #fff0 !important;
    box-shadow: none !important;
    display: inline-block !important;
    height: auto !important;
    position: absolute;
}
.down_item .van-dropdown-item {
    top: 120rpx !important;
}

.hall_head input {
    width: 100%;
    background-color: #fff;
    height: 64rpx;
    border-radius: 60rpx;
}

.children_wrap {
    display: flex;
    justify-content: space-evenly;
    height: 90rpx;
    align-items: center;
    background: #fff;
}
.children_wrap .children_item {
    padding: 9rpx 20rpx;
    border-radius: 53rpx;
    font-size: 28rpx;
}

.children_wrap .active {
    background: #ffd23c;
}