body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f2f3f5;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  width: 90%;
  max-width: 400px;
  overflow: hidden;
}

.header {
  background: #0072ff;
  color: white;
  text-align: center;
  padding: 20px;
}

.header img {
  width: 50%;
  margin-bottom: 5px;
}

.content {
  padding: 20px;
}

.row {
  display: flex;
  justify-content: space-between;
  margin: 15px 0;
  font-size: 16px;
}

.label {
  color: #555;
}

.value {
  font-weight: bold;
  color: #333;
}

.value.amount {
  color: #0072ff;
}

.btn {
  display: block;
  width: 100%;
  background: #0072ff;
  color: white;
  border: none;
  border-radius: 6px;
  padding: 15px;
  font-size: 16px;
  cursor: pointer;
  text-align: center;
  margin-top: 20px;
  transition: background 0.3s;
}

.btn:hover {
  background: #005bd1;
}

@media (max-width: 480px) {
  .row {
    font-size: 14px;
  }
  .btn {
    font-size: 14px;
    padding: 12px;
  }
}