body {
  font-family: Arial, sans-serif;
  background: #f5f7fb;
  margin: 0;
}

.container {
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
}

h1 {
  text-align: center;
}

.card {
  background: white;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

input {
  display: block;
  width: 100%;
  padding: 10px;
  margin: 10px 0;
}

button {
  padding: 10px 20px;
  background: #00A4FF;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}