.box-testo{position:absolute;padding:30px;opacity:0;background:rgba(0,0,0,0.8);width:100%;height:100%;transition:.3s}.box-testo,.box-testo small{color:white}.box-testo:hover{opacity:1}.box{width:100%;height:100%;position:relative}.mobile-text{display:none}@media(max-width:840px){.mobile-text{display:block}.box-testo{display:none}}