.flex-container a{flex:1 1 calc(25% - 10px);max-width:calc(25% - 10px)}.popup-img{width:100%;height:auto;object-fit:cover}@media (max-width:1024px){.flex-container a{flex:1 1 calc(33.33% - 10px);max-width:calc(33.33% - 10px)}}@media (max-width:480px){.flex-container a{flex:1 1 calc(33.33% - 10px);max-width:calc(33.33% - 10px)}}.popup{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,0.8);display:flex;justify-content:center;align-items:center;z-index:1000}.popup img{max-width:90%;max-height:90%}.close-btn:hover{color:#f44336}