body{
    margin:0;
    padding:0;
    background:#0000AA;
    color:#fff;
    font-family:"Perfect DOS VGA 437","PxPlus IBM VGA9","Courier New",monospace;
    overflow:hidden;
    position:relative;
}


canvas{
    position:fixed !important;
    top:0;
    left:0;
    z-index:-1 !important;
    pointer-events:none;
}


.wrapper{
    position:relative;
    z-index:1;

    height:100vh;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
}