:root {
  font-family:
    "Noto Sans SC", "Source Han Sans SC", "Noto Sans", "Liberation Sans",
    system-ui, sans-serif;
  color: #18211f;
  background: #f7f7f2;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  margin: 0;
}

button,
textarea {
  letter-spacing: 0;
}