.png-tool {
    max-width: 900px;
    padding: 20px;
    border: 1px solid #ddd;
    background: #fff;
}

.png-tool-label {
    display: block;
    margin-bottom: 15px;
    font-weight: 600;
}

.png-tool-canvas-wrap {
    max-width: 100%;
    overflow: auto;
    border: 1px solid #ccc;
    background: #f5f5f5;
    padding: 10px;
}

#pngCanvas {
    max-width: 100%;
    height: auto;
    display: block;
}

.row-adjustments {
    margin: 15px 0;
    padding: 12px;
    background: #f7f7f7;
    border: 1px solid #ddd;
}

.row-adjustments div {
    margin-bottom: 8px;
}

.row-adjustments button {
    width: 32px;
    height: 28px;
}