Exemplo de efeito flip - Voltar

<div id="container">
    <div class="flip-card flip-horizontal-left">
        <div class="flip-card-inner">
            <div class="flip-card-front">
                <img src="imgs/front.jpg" width="100">
            </div>
  
            <div class="flip-card-back">
                <img src="imgs/4+.jpg"  width="100">
            </div>
        </div>
    </div>
    
    <div class="flip-card flip-horizontal-left">
        <div class="flip-card-inner">
            <div class="flip-card-front">
                <img src="imgs/front.jpg"  width="100">
            </div>
        
            <div class="flip-card-back">
                <img src="imgs/5.jpg"  width="100">
            </div>
        </div>
    </div>
    
    <div class="flip-card flip-horizontal-left">
        <div class="flip-card-inner">
            <div class="flip-card-front">
                <img src="imgs/front.jpg"  width="100">
            </div>
        
            <div class="flip-card-back">
                <img src="imgs/3.jpg"  width="100">
            </div>
        </div>
    </div>
</div>

{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#container {
    height: 60vh;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/*** Directions ***/
/** Horizontal -> right **/
.flip-horizontal-right:hover .flip-card-inner{
    transform: rotateY(180deg);
}

.flip-horizontal-right .flip-card-back{
    transform: rotateY(180deg);
}

/** Horizontal -> left **/
.flip-horizontal-left:hover .flip-card-inner {
    transform: rotateY(-180deg);
}

.flip-horizontal-left .flip-card-back {
    transform: rotateY(-180deg);
}

/** Vertical - up **/
.flip-vertical-up:hover .flip-card-inner {
    transform: rotateX(180deg);
}

.flip-vertical-up .flip-card-back {
    transform: rotateX(180deg);
}

/** Vertical - down **/
.flip-vertical-down:hover .flip-card-inner {
    transform: rotateX(-180deg);
}

.flip-vertical-down .flip-card-back {
    transform: rotateX(-180deg);
}

/* The flip card container - set the width and height to whatever you want*/
.flip-card {
    background-color: transparent;
    width: 150px;
    height: 233px;
    perspective: 1000px; /* Remove this if you don't want the 3D effect */
}
  
/* This container is needed to position the front and back side */
.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 1s;
    transform-style: preserve-3d;
}
  
/* Position the front and back side */
.flip-card-front, 
.flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

/* It fits the image in the container */
.flip-card-front img,
.flip-card-back img {
    width: 100%;
    height: 100%;
    border-radius: 25px;
    object-fit: cover;
}