body{
    margin: 0;
    padding: 0;
    font-size: 0;
    overflow: hidden;
    cursor: url("../cursor/cursor.cur"),auto;
    user-select: none;
}
#loadingBox{
    position: fixed;
    z-index: 6;
    width: 100vw;
    height: 100vh;
    background-color: black;
    text-align: center;
    cursor: url('../cursor/loading.cur'),auto;
}
.bg_box{
    position: fixed;
    z-index: 0;
    overflow: hidden;
}
#cover{
    position: fixed;
    z-index: 3;
    left: 0;
    bottom: 0;
}
#music_btn_box{
    position: fixed;
    z-index: 3;
    border-radius: 50%;
    overflow: hidden;
}
#music_btn{
    cursor: url('../cursor/function.cur'),auto;
}
@keyframes cross_move{
    0%{
        transform: rotate(0deg);
    }
    10%{
        transform: rotate(-25deg);
    }
    20%{
        transform: rotate(-40deg);
    }
    30%{
        transform: rotate(-20deg);
    }
    45%{
        transform: rotate(5deg);
    }
    50%{
        transform: rotate(0deg);
    }
    100%{
        transform: rotate(0deg);
    }
}
@keyframes logo_move{
    0%{
        transform: rotate(0deg);
    }
    100%{
        transform: rotate(0deg);
    }
}