body {
    margin: 0;
    padding: 0;
    background-color: dimgrey;
}

.content {
    overflow: hidden;
    display: flex;
    /* background-image: url("test-banana.png"); */
}

.stack {
    display: grid;
}

.stack-layer {
    grid-row: 1;
    grid-column: 1;
}

.toolbox {
    margin-top: 10px;
}