#accordion .accordion-titie {
    display: flex;
    justify-content: space-between;
    align-items: center;
    /*padding: 0.5em 1em;*/ /* 增加內邊距確保內容和箭頭有適當的空間 */
}

.arrow {
    cursor: pointer;
    display: inline-block;
    vertical-align: middle;
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-bottom: 5px solid black; /* 黑色箭頭，指向下 */
    transition: transform 0.3s ease;
}

.ui-accordion-header-active .arrow {
    transform: rotate(180deg); /* 當面板打開時，箭頭旋轉 180 度指向上 */
}