.mask-container{
    position: fixed;
    width: 100%;
    height: 100vh;
    background-color: rgba(0,0,0,0.8);
    z-index: 9999;
    top: 0;
    left: 0;
    display: none;
}
.mask-container .mask-chang-pic{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    height: 90vh;
}
.mask-container .mask-chang-pic .mask-img{
    height: 100%;
    width: 100%;
}
.mask-container  .close-icon{
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px !important;
    height: 40px !important;
}
.next-icon{
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40px !important;
    height: 40px !important;
}
.pre-icon{
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 40px !important;
    height: 40px !important;
}