.popup{
    /*width: 900px;
    margin: auto;*/
    text-align: center
}
.popup img{
    /*width: 200px;
    height: 200px;
    border: solid 2px green;*/
    cursor: pointer
}
.showpopup{
    z-index: 333;
    display: none;
}
.showpopup .overlay{
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,.77);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}
.showpopup .img-showpopup{    
    height: 100%;/*size bg image*/
    width: 75%;  /*size bg image*/
   /* background: #FFF; */
    position: fixed;
    top: 50%;
    left: 50%; 
    transform: translate(-50%,-50%);
    overflow: hidden;
}
.img-showpopup span{
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 333;
    cursor: pointer;
    background-color: #fff;
    color: #000;
    font-weight: bold;
}
.img-showpopup img{    
    max-height: 1000px;/*size image*/
    max-width: 500px; /*size image*/
    position: absolute;
    top: 0;  
}
/*End style*/