body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  color: #333;
  transition: background-color 0.3s ease;
}

.color-menu {
  display: flex;
  gap: 10px;
  padding: 10px 20px;
  background-color: #f0f0f0;
  border-bottom: 1px solid #ccc;
}

.color-button {
  width: 25px;
  height: 25px;
  border-radius: 50%;
  border: 2px solid #fff;
  cursor: pointer;
  box-shadow: 0 0 2px rgba(0,0,0,0.5);
}

.content-container {
  padding: 20px;
}