.description{
    display: none;
    position: absolute;
    top: 50%;
    left: 20%;
    color: black;
    background: linear-gradient(to bottom , white , rgba(255, 255, 255, 0.671));
  
    z-index: 300;
    padding: 20px;
    border: 10px;
    width: 300px;
    border-radius: 20px;
    
}

.arrow{

    width: 0; 
    height: 0; 
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    display: none;
    border-bottom: 20px solid white;
    position: absolute;
    top: 46%;
    left: 26%;
}
.imgbox:hover .description , .imgbox:hover .arrow{
    display: block;
}
.prow {
    z-index: 1;
}
.imgbox img{
    z-index: 0;
}