* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background-color: #f4f6f8;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  background-color: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

h1 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: #333;
}

form {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

input[type="text"] {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 1rem;
}

button {
  padding: 0.75rem 1rem;
  background-color: #0078d4;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #005fa3;
}

.delete-btn {
  background-color: transparent;
  border: none;
  color: #d11a2a;
  font-size: 1.2rem;
  cursor: pointer;
}