.cont-canvas
{
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: -1;
}

#sys-canvas
{
    z-index: -1;
    border: 1px solid black;
    border-radius: 10px;
    background-color: rgba(11, 1, 37, 0.842);
}