.tag-item {
    transition: background-color 0.3s, color 0.3s;
    padding: 5px 10px;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 3px;
    margin-right: 10px;
    display: inline-block;
}

.tag-item.selected {
    background-color: red;
    color: white;
}