.vinkje {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: #28a745;
  color: white;
  font-size: 14px;
  font-weight: bold;
  margin-right: 8px;
  flex-shrink: 0;
}

.vinkje::before {
  content: '✓';
}