*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 14px;
  color: #1a1a2e;
  background: #f5f6fa;
  padding: 20px;
  max-width: 960px;
  margin: 0 auto;
}

h1 { font-size: 20px; margin-bottom: 8px; }
p  { color: #636e72; }