*, *::before, *::after {
  box-sizing: border-box;
}

html, body, #root {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 滚动条美化（Webkit） */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
}