小程序多张广告图自适应

<view class='ad_image'>
    <block wx:for="{{ course_data.ad_image }}">
        <image src='{{ item.ad_image }}' mode='widthFix'></image>
    </block>
</view>

.ad_image{
    display: flex;
    flex-direction: column;
    width: 100%;
}
.ad_image image{
    width: 100%;
}