.lich-cong-tac-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    text-align: center;
}

.lich-cong-tac-nav h2 {
    margin: 0;
    font-size: 22px;
    font-weight: bold;
}

.lich-cong-tac-nav a,
.lich-cong-tac-nav button {
    display: inline-block;
    padding: 6px 14px;
    background: #0073aa;
    color: white !important;
    border-radius: 4px;
    text-decoration: none;
}

.lich-cong-tac-nav .disabled {
    background: #ccc !important;
    pointer-events: none;
    cursor: not-allowed;
}