<button plain="true" open-type='share' class="share-button" style="background-image:url(/images/icon/goods_share.png);" plain='true'>
</button>
.share-button{
width: 34rpx;
height: 34rpx;
position: absolute;
right:102rpx;
top: 0;
bottom: 0;
left:136rpx;
margin: auto;
background-size: 34rpx 34rpx;
background-repeat:no-repeat;
border:none;
}