<button size="mini" type="default" open-type="share" class="image-button" style="background-image: url('/static/images/svg/wechat.svg');"></button>
.image-button {width: 65%;height: 65%;// background-image: url('/static/images/svg/wechat.svg');background-size: cover;border-radius: 50%;
}
效果:
