#canvas {
    border: 1px solid black;
    border-radius: 2px;
    image-rendering: pixelated;
}
#centered {
    position: center;
}

.col-6 {
    width: 50% !important;
}
.col-3 {
    width: 25% !important;
}
.col-9 {
    width: 75% !important;
}
.row>*{
    padding-right: 0px !important;
    padding-left: 0px !important;
}

.form-control {
    padding: .375rem .75rem !important;
}