*, *::before, *::after { box-sizing: border-box; }
html, body, #app { margin: 0; min-height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
  background: #eef1f5;
  color: #1f2937;
}
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
img { display: block; max-width: 100%; }
code { font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace; font-size: 0.9em; }
#app {
  width: 100%;
  min-height: 100vh;
}