#live2dcanvas {
    border: 0 !important;
}

body:before{
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: .3;
    z-index: -1;
    content: "";
    position: fixed;
    background: url(https://api.paugram.com/wallpaper/) center/cover;
}