aside > nav > ul > li {
    font-size: 18px;
}

.del-btn {
    padding: 0.3rem 0.5rem;
}

.add-btn {
    margin-left: 0.2rem;
    cursor: pointer;
    width: 24px;
    height: 24px;
}

td > img {
    width: 28px;
    height: 28px;
    cursor: pointer;
}