.device-list-content {
max-height: 0;
opacity: 0;
overflow: hidden;
transition: max-height 0.8s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.8s;
padding: 2px;
}
.device-list-content.open {
opacity: 1;
max-height: 500px;
}