#slideshow-container .slick-prev:before, #slideshow-container .slick-next:before {
    font-size: 40px;
    color:#000;
}

#slideshow-container .slick-prev {
    left: -40px;
}

#slideshow-container .slick-next {
    right: -40px;
}

#slideshow-container .slick-prev, #slideshow-container .slick-next {
    z-index: 1;
    width: 40px;
    height: 40px;
}

#thumbnails-container .slick-prev:before, #thumbnails-container .slick-next:before {
    font-size: 40px;
    color:#000;
}

#thumbnails-container .slick-prev {
    left: -40px;
}

#thumbnails-container .slick-next {
    right: -40px;
}

#thumbnails-container .slick-prev, #thumbnails-container .slick-next {
    z-index: 1;
    width: 40px;
    height: 40px;
}

.img_upload_form {
    width:100%;
    margin:20px auto;
}

#image_upload_form input[type="file"] {
    margin: 5px;
    border: 1px solid #999;
    border-radius: 5px;
}

#image_upload_form input[type="date"], .slideshow_form input[type="month"] {
    margin: 5px;
    border: 1px solid #999;
    border-radius: 5px;
    min-height: 50px;
}

#image_upload_form select, .slideshow_form select {
    margin: 5px;
    min-height: 50px;
    border: 1px solid #999;
    border-radius: 5px;
}

#image_upload_form button, #image-selection-form button {
    min-height: 50px;
    color: #fff;
    text-align: center;
    white-space: nowrap;
    -webkit-user-select: none;
    -moz-user-select: none;
    user-select: none;
    background-color: #999;
    border: 1px solid #999;
    margin: 5px;
    padding: 0.5rem;
    font-size: 1rem;
    border-radius: 5px;
    transition: all .3s;
}

#dropover {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 200px;
}

.active-drop-area {
    background-color: #1d77fd; /* ドラッグ時の背景色変更 */
    opacity: 0.5;
    z-index: 1;
}

#dropArea {
    position: absolute;
    width: 100%;
    border: 4px dashed #ccc;
    display: flex;
    flex-flow: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    min-height: 200px;
}

.doroparea_child {
    margin: 10px;
}

.slideshow {
    display: none;
}

.slick-initialized {
    width: 80%;
    margin: 20px auto;
    display: block;
}

.slideshow_form {
    border:1px solid #999;
    width:100%;
    margin:20px auto;
}

.slide img {
    margin: auto;
}

#thumbnails-container .thumbnails {
    margin-bottom: 5px;
}

#thumbnails-container .slick-slide {
    border-block: 3px solid #fff;
    border-inline: 3px solid #fff;
}

#thumbnails-container .slick-current {
    opacity: 0.3;
}

/* Slickスライダー内部のdivにスタイルを適用 */
.slick-slide > div {
    width: 100%;
    display: flex;
    /*border-block: 3px solid #fff;
    border-inline: 3px solid #fff;*/
}

#thumbnails-container .thumbnail {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    margin-right: 10px;
    overflow: hidden;
    position: relative;
    padding-top: 100%;
}

#thumbnails-container .thumbnail img {
    display: block; 
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/*#thumbnails-container .thumbnail {
    flex: 0 0 100%;
    width: 25%;
    height: 100%;
    box-sizing: border-box;
    margin-right: 10px;
    overflow: hidden;
    position: relative;
    padding-top: 100%;
}


#thumbnails-container .thumbnail img {
    display: block; 
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}*/

.slideshow_form .msg {
    margin: 10px auto;
    width: 90%;
    padding: 10px 20px;
    background-color: blanchedalmond;
    border: 5px solid coral;
    border-radius: 10px;
}

@media (max-width: 767px) {

    .img_upload_form, .slideshow_form {
        font-size: 0.5rem;
        width:96%;
    }

    #image_upload_form button, #image-selection-form button {
        font-size: 0.5rem;
    }
}