openOutpaint/css/index.css

.container {
    position: relative;
}

.backgroundCanvas {
    background-color: #ccc;
}

.maskPaintCanvas {
    border: 3px dotted #993355C0
}

.overlayCanvas {
    border: 1px solid #F00;
}

.tempCanvas {
    border: 3px dotted #007AFFC0;
}

.targetCanvas {
    border: 2px dashed #0F0;
}

.canvas {
    border: 2px dotted #00F;
}

.mainHSplit {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: repeat(2, 1fr);
    grid-column-gap: 5px;
    grid-row-gap: 5px;
}

.uiWrapper {
    display: grid;
    grid-template-columns: 1fr 15fr;
    grid-template-rows: 1fr;
    grid-column-gap: 5px;
    grid-row-gap: 5px;
}

.canvasHolder {
    position: relative;
    width: 2560px;
    height: 1440px;
}

.mainCanvases {
    position: absolute;
    top: 0px;
    left: 0px;
    width: 2560px;
    height: 1440px;
}

.masks {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: 1fr;
    grid-column-gap: 0px;
    grid-row-gap: 0px;
}

.maskCanvas {
    position: absolute;
}

.initImgCanvas {
    position: absolute;
    left: 600px;
}