* {
    margin: 0;
    padding: 0;
}

body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    perspective: 1300px;
}

.text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translateX(-50%);
}

.textone {
    position: absolute;
    left: 50%;
    top: 40%;
    transform: translateX(-50%);
}

:root {
    --margin-top: 0;
    --margin-left: 0;
    --animation-duration: 0s;
    --animation-delay: 0s;
}

div {
    transform-style: preserve-3d;
}

.word-box,
.word-box .word {
    position: absolute;
    animation: rotY 0s linear infinite;
    animation-duration: var(--animation-duration);
    animation-delay: var(--animation-delay);
}

.word-box {
    margin-top: var(--margin-top);

}

.word-box .word {
    margin-left: var(--margin-left);

}

/* .word-box .word {
    animation-direction: reverse;
} */
@keyframes rotY {
    to {
        transform: rotateY(360deg);
    }

}

.word:hover,
.word-box:hover {
    animation-play-state: paused;
}

.album {
    /* background-image: url('/img/流星.png');
    background-size: 100% 100%; */
    /* opacity: 0.1; */
    z-index: 1;
    width: 0px;
    height: 500px;
    background-color: rgb(240, 222, 197, 0.8);
    opacity: 0.97;
    position: absolute;
    left: 50%;
    top: 10%;
    transform: translateX(-50%);
    transition: width 1s;
    /* overflow: hidden; */
    box-shadow: #fff;
    /* display: none; */
    border-radius: 55px;
    




}


.album::before {
    position: absolute;
    background-image: url('../img/流星.png');
    content: '';
    opacity: 0.97;
    background-size: 100% 100%;
    width: 100%;
    height: 100%;
    /* z-index: 1; */
    top: 0px;
    left: 0px;
    border-radius: 55px;
    border-bottom-right-radius: 20px;
   
    box-sizing: border-box;



}

.album .album-left {
    margin: 0 auto;
    display: flex;
    float: left;
    background-color: azure;
    width: 600px;
    height: 350px;
    margin-top: 100px;
    margin-bottom: 100px;
    border-bottom-left-radius: 50px;
    border-top-left-radius: 55px;
    transition: width 1s;
    justify-content: center;
    border-radius: 20px;
    box-sizing: border-box;
    text-indent: 2em;
    /* overflow: hidden; */

}





.album .album-left::before {
    z-index: 1;
    content: '';
    width: 250px;
    height: 250px;
    border: 20px solid rgba(0, 255, 255, 0.3);
    position: absolute;
    bottom: -30px;
    left: -140px;
    border-radius: 10px;
    transform: rotate(30deg);
    animation: transform 4s infinite;


    

}




@keyframes transform {
    0% {
        transform: rotate(30deg) translate(0);
    }

    50% {
        transform: rotate(50deg) translate(10px);
    }

    100% {
        transform: rotate(30deg) translate(0px);
    }
}

.album .album-left::after {
    z-index: 1;
    content: '';
    width: 250px;
    height: 250px;
    border: 20px solid rgba(0, 255, 255, 0.4);
    position: absolute;
    bottom: -30px;
    left: -140px;
    border-radius: 10px;
    transform: rotate(30deg);
    animation: transform2 4s infinite;
    

}



.album .album-left::before {
    position: absolute;
    content: '';
    background-image: url('../img/星星.png');
    display: inline-block;
    background-size: 80px 80px;
    width: 80px;
    height: 80px;
    top: -120px;
    right: 550px;
    
}

/* @keyframes transform2 {
    0% {
        transform: rotate(30deg) translate(0);
    }

    50% {
        transform: rotate(90deg) translate(10px);
    }

    100% {
        transform: rotate(30deg) translate(0px);
    }
} */

.album .album-left .text_ablum {
    width: 100%;
    height: 100%;
    overflow: hidden;
    padding: 70px;
    background-color: rgb(217, 23, 62, 0.55);
    border: 1px solid black;
    
    box-sizing: border-box;
    overflow: hidden;



}


.album .album-right {
    float: left;
    background-color: white;
    height: 90%;
    width: 400px;
    border: 4px solid black;
    border-right: 0px;
    box-sizing: border-box;
    margin-top: 70px;
    
    transition: width 1s;
    border-radius: 20px;
    overflow: hidden;




}


.album .album-right img {
    width: 100%;
    height: 100%;
}

.album .return {

    width: 50px;
    height: 50px;
    background-color: skyblue;
    position: absolute;
    top: 50%;
    z-index: 2;
    margin-top: -20px;
    margin-left: -20px;
    /* border-bottom-right-radius: 20px;
    border-top-right-radius: 20px; */
    border-radius: 12px;
    text-align: center;
    line-height: 50px;
    padding-top: 10px;
}


/* 分割线？ */
.left_nav {
    width: 100px;
    position: fixed;
    left: 0;
    top: 5%;
}

.left_nav .small_tag {
    margin-top: 5px;
    background-color: rgb(0, 0, 0, 0.3);
    border: 1px solid blanchedalmond;
    color: #fff;
    text-align: center;
    text-shadow: 1px 1px 20px skyblue;
    border-radius: 4px;


}

.left_nav .small_tag:hover {
    background-color: rgb(255, 255, 255, 0.9);

    color: black;
}