.collapsed{
    position:relative;
}

.collapse_box .collapse_btn {
    position: absolute;
    bottom: 6%;
    left: 50%;
    transform: translate(-50%, 0%);
    z-index: 101;
    color: #ffffff;
    border: 3px solid #ffffff;
    padding: 5px 25px 5px 25px;
    border-radius: 10px;
    font-size: 1.2rem;
    font-weight: 600;
    animation: ZoomBtn_1 1s ease-in-out infinite;
}

.collapse_box .collapse_btn:hover {
    color: #fff673;
    border-color: #fff673;
    cursor: pointer;
}


@media (max-width: 576px) {
    .collapse_box .collapse_btn {
        border: 2px solid #ffffff;
        padding: 1px 20px 1px 20px;
        border-radius: 10px;
        font-size: 0.75rem;
        font-weight: 600;
    }
}

.expanded{
    position:relative;
}

.collapse_box .collapse_video {
    position: absolute;
    top: 3%;
    left: 50%;
    transform: translate(-50%, 0%);
    z-index: 101;
    width: 75%;
    object-fit: cover;  /* 確保 poster 圖片與影片填滿指定範圍，不拉伸變形 */
}