style3.css

body{
font-family: Arial, Helvetica, sans-serif;
}

.flip-card{
background-color: transparent;
width: 300px;
height: 300px;
perspective: 1000px;
}

.flip-card-inner{
position: relative;
width: 100%;
height: 100%;
text-align: center;
transition: transform 0.6s;
transform-style: preserve-3d;
box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

.flip-card:hover .flip-card-inner{
transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back{
position: absolute;
width: 100%;
height: 100%;
-webkit-backface-visibility: hidden;
backface-visibility: hidden;
}

.flip-card-front{
background-color: #bbb;
color: #000000;
}

.flip-card-back{
background-color: #2980b9;
color: #ffffff;
transform: rotateY(180deg);
}

img{
width: 300px;
}

body{
display: flex;
justify-content: center;
align-items: center;
}