body {
  font-family: Arial, sans-serif;
  padding: 20px;
  background: #f0f0f0;
}

.cards {
  list-style: none;
  padding: 0;
  margin: 0;
  min-height: 40px;
}

.card {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 10px;
  margin: 5px 0;
  cursor: move;
  position: relative;
  transition: background 0.3s;
}

.card:hover {
  background: #f8f8f8;
}

.card ul {
  margin-left: 20px;
  margin-top: 5px;
	color: #2F1DD5;
}

.ui-sortable-placeholder {
  visibility: visible !important;
  background: #e0e0e0;
  border: 1px dashed #999;
}

h1 {
  color: #333;
  font-size: 24px;
  margin-bottom: 15px;
}

hr {
  border: 0;
  border-top: 2px solid #ddd;
  margin: 10px 0;
}