.font-size-controls {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #fff;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    display: flex;
    gap: 5px;
}

.font-size-btn {
    background: #108371;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

.font-size-btn:hover {
    background: #0d6b5d;
}

.font-size-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}