.image-hover{position:relative;overflow:hidden;cursor:pointer}
.image-hover img{transition:all .5s ease;display:block}
.image-hover::after{content:"Réseau";position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(45deg,#5F0282CC,#258202CC);color:#fff;font-size:1.3em;font-weight:700;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .5s ease}
.image-hover:hover img{transform:scale(1.05);filter:brightness(0.6)}
.image-hover:hover::after{opacity:1}