.click_img{
    width: 260px;
    height: 162px;
    margin: 50px auto;
    cursor: pointer;
}
.click_img img{
    width: 100%;
    height: 100%;
}
.photo_detail{
    position: fixed;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    z-index: 999;
    /*display: none;*/
}
.bg_color{
    position: fixed;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background: rgba(0,0,0,0.7);
}
.album{
    position: relative;
    width: 850px;
    height: 950px;
    z-index: 999;
    margin: 0 auto;
    background: #000;
}
.up_part{
    height: 850px;
    width: 850px;
    position: relative;
}
.down_part{
    height: 75px;
    width: 850px;
    position: relative;
    padding-top: 25px;
}
.detail_img{
    width: 640px;
    height: 820px;
    margin: 0 auto;
    overflow: hidden;
    padding-top: 20px;
}
.detail_img ul li{
    width: 640px;
    height: 820px;
    line-height: 820px;
    text-align: center;
    overflow: hidden;
    float: left;
}
.detail_img ul li img{
    width: 100%;
    vertical-align: middle;
}






.photo_menu_img{
    width: 704px;
    overflow: hidden;
    height: 50px;
    position: relative;
    margin: 0 auto;
}
.photo_menu_img ul{
    position: absolute;
    transition: left 3s ease 0s;
    left: 0;
    top: 0;
}
.photo_menu_img ul li{
    float: left;
    width: 65px;
    height: 50px;
    overflow: hidden;
    margin-left: 6px;
    opacity: 0.4;
    cursor: pointer;
}
.photo_menu_img ul li:first-child{
    margin-left: 0;
}
.photo_menu_img ul li.opacity{
    opacity: 1;
    border: 3px solid white;
    box-sizing: border-box;
    -webkit-transition: all 1s ease;
    -moz-transition: all 1s ease;
    -o-transition: all 1s ease;
    transition: all 1s ease;
}
.photo_menu_img ul li img{
    width: 100%;
    height: 100%;
}
.arrow{}
#btnLeft{
    width: 13px;
    height: 23px;
    position: absolute;
    left: 30px;
    top: 37px;
    cursor: pointer;
}
#btnRight{
    width: 13px;
    height: 23px;
    position: absolute;
    right: 30px;
    top: 37px;
    cursor: pointer;
}

.big_w_change{
    width: 640px;
}
.big_h_change{
    height: 820px;
}
.big_m_change{
    width: 500px;
    height: 500px;
}