antd-mobile/es/components/badge/badge.css

<div align="center">

.adm-badge-wrapper {
  display: inline-block;
  position: relative;
}
.adm-badge {
  display: inline-flex;
  vertical-align: middle;
  box-sizing: content-box;
  border-radius: 100px;
  background-color: var(--color);
  --right: 0;
  --top: 0;
  --color: var(--adm-badge-color, var(--adm-color-highlight));
}
.adm-badge-content {
  color: var(--adm-color-text-light-solid);
  box-sizing: border-box;
  min-width: 8px;
  padding: 1px 4px;
  font-size: var(--adm-font-size-1);
  line-height: 12px;
  white-space: nowrap;
  font-weight: normal;
  text-align: center;
}
.adm-badge-fixed {
  position: absolute;
  right: var(--right);
  top: var(--top);
  transform: translate(50%, -50%);
}
.adm-badge-dot {
  min-width: 10px;
  width: 10px;
  height: 10px;
  border-radius: 5px;
}
.adm-badge-bordered {
  border: solid 1px var(--adm-color-text-light-solid);
}