body {
  font-family: Tahoma, sans-serif;
  background: #f0f2f5;
  text-align: center;
  padding: 20px;
}
.card {
  background: white;
  border-radius: 10px;
  padding: 20px;
  display: inline-block;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: left;
}
button {
  margin: 10px;
  padding: 10px 20px;
  font-size: 14px;
}