.color-option {
  width: 35px;
  height: 35px;
  border-radius: 50%;
  border: 2px solid #ccc;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
}

.color-radio:checked + label .color-option {
  border: 3px solid #000;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
}