<div class="hover__wrap">
    <div class="hover__updown">
        <figure class="front">
            <img src="https://raw.githubusercontent.com/sukjun2/coding2/main/animation/img/codepen_bg01.jpg" alt="Up">
            <figcaption>
                <h3>Mouse Hover Effect</h3>
                <p>마우스 올리면 Up</p>
            </figcaption>
            <!-- figure의 설명을 나타내는 태그 -->
        </figure>
        <figure class="back">
            <img src="https://raw.githubusercontent.com/sukjun2/coding2/main/animation/img/codepen_bg02.jpg" alt="Down">
            <figcaption>
                <h3>Mouse Hover Effect</h3>
                <p>마우스 내리면 Down</p>
            </figcaption>
            <!-- figure의 설명을 나타내는 태그 -->
        </figure>
    </div>
    <div class="hover__leftright">
        <figure class="front">
            <img src="https://raw.githubusercontent.com/sukjun2/coding2/main/animation/img/codepen_bg03.jpg" alt="Right">
            <figcaption>
                <h3>Mouse Hover Effect</h3>
                <p>마우스 올리면 to Right</p>
            </figcaption>
            <!-- figure의 설명을 나타내는 태그 -->
        </figure>
        <figure class="back">
            <img src="https://raw.githubusercontent.com/sukjun2/coding2/main/animation/img/codepen_bg04.jpg" alt="Left">
            <figcaption>
                <h3>Mouse Hover Effect</h3>
                <p>마우스 내리면 to Left</p>
            </figcaption>
            <!-- figure의 설명을 나타내는 태그 -->
        </figure>
    </div>
</div>

@font-face {
    font-family: 'LocusSangsang';
    font-weight: normal;
    font-style: normal;
    src: url('https://cdn.jsdelivr.net/gh/webfontworld/locus/LocusSangsang.eot');
    src: url('https://cdn.jsdelivr.net/gh/webfontworld/locus/LocusSangsang.eot?#iefix') format('embedded-opentype'),
         url('https://cdn.jsdelivr.net/gh/webfontworld/locus/LocusSangsang.woff2') format('woff2'),
         url('https://cdn.jsdelivr.net/gh/webfontworld/locus/LocusSangsang.woff') format('woff'),
         url('https://cdn.jsdelivr.net/gh/webfontworld/locus/LocusSangsang.ttf') format("truetype");
    font-display: swap;
}

body {
    font-family: 'LocusSangsang';
    background-image: linear-gradient(
        135deg,
        #191970 0%,
        #483D8B 40%,
        #9370DB 100%
    );
    height: 100vh;
}

.hover__wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.hover__wrap > div {
    max-width: 400px;
    margin: 3%;
    position: relative;
    perspective: 300px
    /* perspective = 원근감 표현 */
}

.hover__wrap > div img {
    width: 100%;
    border: 10px solid #F0F8FF;
    box-shadow: 2px 2px 2px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    vertical-align: top;
}

.hover__wrap > div .front {
    transition: transform 1s;
    backface-visibility: hidden;
    transform-style: preserve-3d;
}

.hover__wrap > div .back {
    position: absolute;
    left: 0;
    top: 0;
    z-index: -1;
    transition: transform 1s;
    transform-style: preserve-3d;
}

.hover__wrap > div figcaption {
    background: rgba(0, 0, 0, 0.4);
    color: #F8F8FF;
    padding: 10px;
    text-align: center;
    line-height: 1.5;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) translatez(100px);
    width: 60%;
    backface-visibility: hidden;
}

/* mouse hover effect */
.hover__updown .front {
    transform: rotateX(0deg);
}

.hover__updown:hover .front {
    transform: rotateX(180deg);
}

.hover__updown .back {
    transform: rotateX(-180deg);
}

.hover__updown:hover .back {
    transform: rotateX(0deg);
}

.hover__leftright .front {
    transform: rotateY(0deg);
}

.hover__leftright:hover .front {
    transform: rotateY(180deg);
}

.hover__leftright .back {
    transform: rotateY(-180deg);
}

.hover__leftright:hover .back {
    transform: rotateY(0deg);
}