.gal-img-sig {
    float: left;
    width: 22%;
    margin: 15px 1%;
}
.gal-img-sig img {
    border: 2px solid #efefef;
}
#image-slider {
    position: fixed;
    left: 0;
    top: 0;
    background: #000000e0;
    z-index: 99;
    width: 100%;
    height: 100%;
    display: none;
}
.slider-inner {
    position: relative;
    width: 40%;
    height: 100%;
    margin: 0 auto;
    color: #fff;
}
.h3-slider {
    position: relative;
    text-align: center;
    top: 20px;
}
.ul-album {
    width: 100%;
    height: 90%;
    padding-top: 5%;
}
.li-listimg{
    display: none;
    width: 100%;
    height: 100%;
    background: no-repeat;
    background-size: contain;
    background-position: center center;
}
.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    color: #fff;
    font-size: 40px;
}
.btn-pre, .btn-next {
    position: absolute;
    top: 50%;
    height: 66px;
    font-size: 50px;
    color: #fff;
    background: #000000eb;
    padding: 0 8px;
    opacity: .6;
    transition: all .4s;
    display: flex;
    align-items: center;
}
.btn-pre {
    left: -100px;
}
.btn-next {
    right: -100px;
}
.btn-pre:hover, .btn-next:hover {
    color: #fff;
    opacity: 1;
}
.sttpre-slider, .sttnext-slider{
    display: none;
    font-size: 20px;
}
.sttnext-slider, .sttpre-slider {
    position: absolute;
    top: 0;
    background: #000000eb;
    width: 45px;
    height: 66px;
    font-size: 16px;
}
.sttnext-slider {
    left: -20px;
    align-items: center;
    justify-content: flex-end;
}
.sttpre-slider {
    right: -20px;
    align-items: center;
    justify-content: flex-start;
}
@media screen and (max-width:1024px) { 
    .slider-inner {
        width: 70%;
    }
}
@media screen and (max-width:900px) { 
    .close-btn {
        right: -40px;
    }
}
@media screen and (max-width:600px) { 
    .slider-inner {
        width: 90%;
    }
    .close-btn {
        right: 0;
        z-index: 99;
    }
    .btn-next {
        right: -20px;
    }
    .btn-pre {
        left: -20px;
    }
    
}