body {
  font-family: Arial;
  background: #f4f6f8;
  padding: 20px;
}
.card {
  background: white;
  padding: 15px;
  margin: 10px 0;
  border-radius: 8px;
  width: 320px;
}
.comp { background: #e6fff2; }
button { padding: 6px 10px; }