.block_person{
    padding-bottom: 50px;
}

.card {
        width: 215px;
        height: 215px;
        position: relative;
        display: inline-flex;        
    }
    .card .img-second {
        display: none;
        position: absolute;
        top: 0;
        left: 0;        
    }
    
    .card .img-first {        
        top: 0;
        left: 0;        
    }
    
    
    .card:hover .img-second {
        display: inline;
    }
    .card:hover .img-first {
        display: none;
    }