* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4f6f8;
  color: #202124;
}
.container {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.card {
  width: min(520px, 100%);
  background: white;
  padding: 32px;
  border-radius: 14px;
  box-shadow: 0 8px 30px rgba(0,0,0,.08);
}
.actions {
  display: grid;
  gap: 12px;
  margin: 24px 0;
}
.button, button {
  display: inline-block;
  border: 0;
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 15px;
  cursor: pointer;
  text-decoration: none;
  background: #1a73e8;
  color: white;
  text-align: center;
}
.button.secondary { background: #24292f; }
button { width: 100%; }