.card{border:1px solid #ddd;border-radius:8px;padding:16px;margin:0;background:#fff;box-shadow:0 2px 4px #0000001a;box-sizing:border-box;display:flex;flex-direction:column}.column{width:300px;display:flex;flex-direction:column;max-height:70vh;overflow-y:auto}.column .column-header{margin-bottom:8px}.column .column-header h3{margin:0;color:#333;font-size:1.2em}.column .cards{display:flex;flex-direction:column;gap:16px}