微信红包封面，无了
https://support.weixin.qq.com/cg ... eiveuri=zmuvsvM0OHG✓_type=2&immersiveUIStyle=1&immersivePageBgIsDark=2#wechat_redirect
https://support.weixin.qq.com/cg ... eiveuri=zmuvsvM0OHG✓_type=2&immersiveUIStyle=1&immersivePageBgIsDark=2#wechat_redirect