health.applet/miniprogram/module/chats/components/message-system/message-system.scss

/* module/chats/components/message-system/message-system.wxss */
.system-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 6px 0;

  .title {
    padding: 4px 12px;
    font-size: 12px;
    color: white;
    background-color: #1D6FF6;
    border-radius: 5px;
  }

  .date {
    font-size: 12px;
    color: #999;
    margin-bottom: 6px;
  }
}

button {
  line-height: 18px;
}