.wrapper{
    /*width : 100%;*/
    /*height: 100%;*/

    display: flex;
    justify-content: center;
    align-items: center;
    padding: 50px;
    height: 100vh;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.64) 0%, rgba(0, 0, 0, 0.84) 100%);
}

canvas {
    /*padding: 5px;*/
    /*border: 2px solid darkred;*/
    border: 1px solid #3fb74f;

}