微信小程序：使元素在底部固定
- 效果图
- wxml
<view class='col'><view class='block'><image src='/image/icon/like.png'</image><view>喜欢</view></view><view class='block'><image src='/image/icon/collect.png'</image><view>收藏</view></view><view class='block'><image src='/image/icon/share.png'</image><view>分享</view></view></view>- wxss
.col{overflow:hidden;margin-bottom:0;background:#f0eff5;width:100%;position:fixed;bottom:0px;display:flex;justify-content:center;
