kanban"> <div class="himo"></div> <div class="board"> <p>४උத</p> </div> </div> </div> .upper-enter-active { animation: upper-in 5s; } .upper-leave-active { animation: upper-in 5s reverse; } @keyframes upper-in { 0% { height: 0; } 100% { height: 100vh; } } •