body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 20px;
  min-height: 100vh;
  transition: background-color 0.3s ease;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

h1 {
  color: #333;
  margin-bottom: 30px;
  font-size: 2.5rem;
}

.color-controls {
  margin-bottom: 30px;
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

select {
  padding: 10px;
  font-size: 16px;
  border: 2px solid #ddd;
  border-radius: 5px;
  outline: none;
  cursor: pointer;
}

select:focus {
  border-color: #007bff;
}

#Addkero {
  padding: 10px 20px;
  font-size: 16px;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#Addkero:hover {
  background-color: #0056b3;
}

#buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 20px;
}

#buttons button {
  padding: 15px 25px;
  font-size: 14px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  color: white;
  text-transform: uppercase;
  font-weight: bold;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

#buttons button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}