CSS定位到最底部

<view class='sub_com'>
 <button formType="submit" disabled="{{subdisabled}}" class='sub_bott' >保存</button>
</view>

.sub_com{
 width:100%;
 display: flex;
 align-items: center;




 justify-content: center;
 font-size:30rpx;
 position: absolute;
 bottom:0rpx;
}




.sub_bott{
 width:100%;
 background-color:#fed404;
 color:#343537;
}