* {box-sizing: border-box;}
.container2 {
position: relative;
width: 100%;
max-width: 300px;
}
.image {
display: block;
width: 100%;
height: auto;
}
.overlay {
position: absolute;
bottom: 0;
background: rgb(0, 0, 0);
background: rgba(0, 0, 0, 0.5); /* Black see-through */
color: #f1f1f1;
width: 100%;
transition: .5s ease;
opacity:0;
color: white;
font-size: 20px;
padding: 20px;
text-align: center;
}
.container2:hover .overlay {
opacity: 1;
}
.img-flip:hover {
-webkit-transform: scaleX(-1);
transform: scaleX(-1);
}