vant-weapp/dist/badge/index.wxss

.zan-badge{position:relative}.zan-badge__count{position:absolute;top:-16px;right:0;height:1.6em;min-width:1.6em;line-height:1.6;padding:0 .4em;font-size:20px;border-radius:.8em;background:#f44;color:#fff;text-align:center;white-space:nowrap;transform:translateX(50%) scale(.5);transform-origin:center;z-index:10;box-shadow:0 0 0 2px #fff;box-sizing:border-box}