/* 맨위로 버튼 */
.go_top_btn {
    position: fixed;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 9999;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 1px solid rgba(102, 102, 102, 0.5); /* #777 */
    background: rgba(255, 255, 255, .98);
    /* box-shadow: 0 4px 16px rgba(0, 59, 131, .1); */ /* #003b83 */
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition:
            opacity .25s ease,
            visibility .25s ease,
            background .25s ease,
            transform .25s ease;
}

/* 맨위로 버튼 화살표 */
.go_top_btn::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 56%;
    width: 13px;
    height: 13px;
    border-top: 1px solid #666;
    border-left: 1px solid #666;
    transform: translate(-50%, -56%) rotate(45deg);
}

/* 맨위로 버튼 스크롤 시 노출 */
.go_top_btn.is_show {
    opacity: 1;
    visibility: visible;
}

/* 맨위로 버튼 마우스 오버 */
.go_top_btn:hover {
    border: 1px solid rgba(0, 59, 131, .95); /* #003b83 */
}
.go_top_btn:hover::before {
    border-top: 2px solid #003b83;
    border-left: 2px solid #003b83;
}

/* Shop Produts 리스트 이미지 테두리 */
.reference_wrap .reference_img_wrap .reference_img img {
    border: 1px solid rgba(0, 0, 0, 0.12);
}