* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #f0f4f8, #d9e2ec);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.container {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
  padding: 40px;
  max-width: 420px;
  text-align: center;
  animation: fadeInUp 0.7s ease-out;
}

.checkmark {
  font-size: 64px;
  color: #38b000;
  margin-bottom: 20px;
}

h1 {
  font-size: 24px;
  color: #333333;
  margin-bottom: 10px;
}

@keyframes fadeInUp {
  from {
    transform: translateY(30px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}