#loading,#cover_box,#content,#end_piece{
    height: 100%;
    width: 100%;
}

/*loading 开始*/
#loading{
    position: fixed;
    top: 0;
    left:0;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

#load_img{
    width: 65%;
}
#load_box{
    width: 65%;
}
#load_box>div{
    float: left;
}

#load_bar{
    width: 80%;
    height: 22px;
    border: 1px solid #000000;
    box-sizing: border-box;
}


#load_core{
    height: 100%;
    width: 0%;
    background: #ffffff;
}

#load_txt{
    width: 20%;
    text-align: center;
    font-size: 20px;
    line-height: 22px;
}

#load_btn{
    border: 1px solid #000;
    padding: 0 8px;
    line-height: 24px;
    margin-top: 8px;
    opacity: 0;
    transition: opacity 1s;
}
/*loading 结束*/

/*cover 开始*/
#cover_video{
    object-fit: fill;
}

/*cover 结束*/

#content{
    position: relative;
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

/*scene*/
.scene{
    width: 100%;
    height: 100%;
    overflow-y: auto;
    position: absolute;
    top: 0;
    transition: top 0.5s;
    display: none;
}

.scene_a{
    position: relative;
}

.scene img {
    display: block;
}

.scene_next {
    width: 44%;
    position: absolute;
    bottom: 1.5%;
    transform: translateX(-50%);
    left: 50%;
    animation:san_doing 0.4s infinite ;
    animation-direction:alternate;
}

#scene_1b,#scene_2b,#scene_3b,#scene_4b{
    /*background: url("") no-repeat 100% 100%;*/
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

.scene_b{
    width: 100%;
    height: 100%;
    position: fixed;
    left: 100%;
    top:0;
    transition: left 0.5s,top 0.5s,right 0.5s;
}

.scene_1b_img{
    display: block;
    width: 88%;
    position: absolute;
    left: 100%;
    transition: left 0.5s;
}
#s1b_1{
    top: 17%;
    transition: left 0.5s linear 0.3s;
}
#s1b_2{
    top: 36%;
    transition: left 0.5s linear 0.5s;
}
#s1b_3{
    top: 55%;
    transition: left 0.5s linear 0.7s;
}

.scene_2b_img{
    position: absolute;
    opacity:0;
}
#s2b_1{
    top: 24%;
    left: 5%;
    width: 40%;
    transition: opacity 0.5s linear 0.1s;
}
#s2b_2{
    top: 50%;
    right: 1%;
    width: 71%;
    transition: opacity 0.5s linear 0.3s;
}
#s2b_3{
    bottom: 10%;
    left: 18%;
    width: 50%;
    transition: opacity 0.5s linear 0.5s;
}


.scene_3b_img{
    position: absolute;
    opacity:0;
}
#s3b_1{
    top: 18%;
    left: 20%;
    width: 41%;
    transition: opacity 0.5s linear 0.3s;
}
#s3b_2{
    bottom: 13%;
    left: 2%;
    width: 47%;
    transition: opacity 0.5s linear 0.5s;
}
#s3b_3{
    bottom: 10%;
    right: 2%;
    width: 40%;
    transition: opacity 0.5s linear 0.7s;
}
#s3b_4{
    bottom: 2%;
    left: 16%;
    width: 36%;
    transition: opacity 0.5s linear 0.9s;
}

#scene_4b{
    left: -100%;
}

.scene_4b_img{
    position: absolute;
    /*opacity:0;*/
}
#s4b_1{
    opacity: 0;
    right: 100%;
    top: 7%;
    width: 94%;
    height: 48%;
    transition: right 0.5s linear 0.1s,opacity 0.5s linear 0.1s;
}
#s4b_2{
    opacity: 0;
    display: none;
    left: 100%;
    top: 50%;
    width: 94%;
    height: 48%;
    transition: left 0.5s linear 1.1s,opacity 0s linear 1.1s;
}

#s4b_3{
    opacity: 0;
    left: 9%;
    top: 44%;
    width: 30%;
    transition: opacity 0.5s linear 0.3s;
}
#s4b_4{
    opacity: 0;
    left: 60%;
    top: 5%;
    width: 31%;
    transition: opacity 0.5s linear 0.5s
}
#s4b_5{
    opacity: 0;
    right: 1%;
    top: 41%;
    width: 44%;
    transition: opacity 0.5s linear 0.7s;
}
#s4b_6{
    opacity: 0;
    left: 6%;
    top: 55%;
    width: 37%;
    transition: opacity 0.5s linear 1.3s;
}
#s4b_7{
    opacity: 0;
    left: 52%;
    top: 55%;
    width: 35%;
    transition: opacity 0.5s linear 1.5s;
}
#s4b_8{
    opacity: 0;
    left: 48%;
    top: 64%;
    width: 33%;
    transition: opacity 0.5s linear 1.7s;
}
#s4b_9{
    opacity: 0;
    left: 7%;
    bottom: 4%;
    width: 27%;
    transition: opacity 0.5s linear 1.9s;
}

#scene_5a{
    width: 100%;
    height: 100%;
}
#scene_5a>img{
    width: 100%;
    height: 100%;
}

#end_piece{
    background-repeat: no-repeat;
    background-size: 100% 100%;
}











@keyframes san_doing
{
    0%   {opacity:1}
    100% {opacity:0.4}
}